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Apply the exponent rule b⁰ = 1.

Mathematics

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8 parts
a

6a3b6a^3b

b

−2x2−7x-2x^2 - 7x

c

3x4+6x23x^4 + 6x^2

d

-10x + 30y - 20

e

28p2−21p28p^2 - 21p

f

8y2−12xy+24y8y^2 - 12xy + 24y

g

−12m2−7mn−2mb-12m^2 - 7mn - 2mb

h

x2+20xx^2 + 20x

Step-by-step solution

27 steps

Part a· 5 steps

  1. Apply the exponent rule b0=1b^0 = 1.

    3ab0×2a2b=3a(1)×2a2b3ab^0 \times 2a^2b = 3a(1) \times 2a^2b
  2. Multiply the coefficients.

    3×2=63 \times 2 = 6
  3. Multiply the aa terms using the rule am×an=am+na^m \times a^n = a^{m+n}.

    a×a2=a1+2=a3a \times a^2 = a^{1+2} = a^3
  4. Multiply the bb terms.

    1×b=b1 \times b = b
  5. Combine the results.

    6a3b6a^3b

    The simplified expression is:

    6a3b\boxed{6a^3b}

Part b

−2x2−7x-2x^2 - 7x

  1. Distribute −x-x to each term inside the parentheses.

    −x(2x+7)=(−x)(2x)+(−x)(7)-x(2x+7) = (-x)(2x) + (-x)(7)
  2. Perform the multiplications.

    −2x2−7x-2x^2 - 7x

    The simplified expression is:

    −2x2−7x\boxed{-2x^2 - 7x}

Part c

3x4+6x23x^4 + 6x^2

  1. Distribute 3x23x^2 to each term inside the parentheses.

    3x2(x2+2)=(3x2)(x2)+(3x2)(2)3x^2(x^2+2) = (3x^2)(x^2) + (3x^2)(2)
  2. Perform the multiplications using the rule xm×xn=xm+nx^m \times x^n = x^{m+n}.

    3x2+2+6x23x^{2+2} + 6x^2 3x4+6x23x^4 + 6x^2

    The simplified expression is:

    3x4+6x2\boxed{3x^4 + 6x^2}

Part d-10x + 30y - 20

  1. Distribute −5-5 to each term inside the parentheses.

    −5(2x−6y+4)=(−5)(2x)+(−5)(−6y)+(−5)(4)-5(2x-6y+4) = (-5)(2x) + (-5)(-6y) + (-5)(4)
  2. Perform the multiplications.

    −10x+30y−20-10x + 30y - 20

    The simplified expression is:

    −10x+30y−20\boxed{-10x + 30y - 20}

Part e

28p2−21p28p^2 - 21p

  1. Apply the exponent rule p0=1p^0 = 1 inside the parentheses.

    7p(−2p0+4p−1)=7p(−2(1)+4p−1)7p(-2p^0+4p-1) = 7p(-2(1)+4p-1) 7p(−2+4p−1)7p(-2+4p-1)
  2. Distribute $7p$ to each term inside the parentheses.

    7p(−2)+7p(4p)+7p(−1)7p(-2) + 7p(4p) + 7p(-1)
  3. Perform the multiplications.

    −14p+28p2−7p-14p + 28p^2 - 7p
  4. Combine like terms.

    28p2+(−14p−7p)28p^2 + (-14p - 7p) 28p2−21p28p^2 - 21p

    The simplified expression is:

    28p2−21p\boxed{28p^2 - 21p}

Part f

8y2−12xy+24y8y^2 - 12xy + 24y

  1. Distribute $4y$ to each term inside the parentheses.

    4y(2y−3x+6)=(4y)(2y)+(4y)(−3x)+(4y)(6)4y(2y-3x+6) = (4y)(2y) + (4y)(-3x) + (4y)(6)
  2. Perform the multiplications.

    8y2−12xy+24y8y^2 - 12xy + 24y

    The simplified expression is:

    8y2−12xy+24y\boxed{8y^2 - 12xy + 24y}

Part g

−12m2−7mn−2mb-12m^2 - 7mn - 2mb

  1. Distribute $3m$ into the first set of parentheses.

    3m(−4m−3n)=(3m)(−4m)+(3m)(−3n)3m(-4m-3n) = (3m)(-4m) + (3m)(-3n) −12m2−9mn-12m^2 - 9mn
  2. Distribute −2m-2m into the second set of parentheses.

    −2m(−b+n)=(−2m)(−b)+(−2m)(n)-2m(-b+n) = (-2m)(-b) + (-2m)(n) 2mb−2mn2mb - 2mn
  3. Combine the results from Step 1 and Step 2.

    (−12m2−9mn)−(2mb−2mn)(-12m^2 - 9mn) - (2mb - 2mn)
  4. Distribute the negative sign to the terms in the second parenthesis.

    −12m2−9mn−2mb+2mn-12m^2 - 9mn - 2mb + 2mn
  5. Combine like terms (−9mn-9mn and 2mn2mn).

    −12m2+(−9mn+2mn)−2mb-12m^2 + (-9mn + 2mn) - 2mb −12m2−7mn−2mb-12m^2 - 7mn - 2mb

    The simplified expression is:

    −12m2−7mn−2mb\boxed{-12m^2 - 7mn - 2mb}

Part h

x2+20xx^2 + 20x

  1. Distribute $4x$ into the first set of parentheses.

    4x(x+2)=(4x)(x)+(4x)(2)4x(x+2) = (4x)(x) + (4x)(2) 4x2+8x4x^2 + 8x
  2. Distribute −3x-3x into the second set of parentheses.

    −3x(x−4)=(−3x)(x)+(−3x)(−4)-3x(x-4) = (-3x)(x) + (-3x)(-4) −3x2+12x-3x^2 + 12x
  3. Combine the results from Step 1 and Step 2.

    (4x2+8x)+(−3x2+12x)(4x^2 + 8x) + (-3x^2 + 12x)
  4. Remove the parentheses.

    4x2+8x−3x2+12x4x^2 + 8x - 3x^2 + 12x
  5. Combine like terms (4x24x^2 with −3x2-3x^2, and 8x8x with 12x12x).

    (4x2−3x2)+(8x+12x)(4x^2 - 3x^2) + (8x + 12x) x2+20xx^2 + 20x

    The simplified expression is:

    x2+20x\boxed{x^2 + 20x}
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