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Evaluate the following expressions, showing your work: a) a(b+c) with a=2, b=-3, c=-5 b) a(b+c) with a=-7, b=2, c=3 c) a(b+c) with a=1, b=-8, c=2 d) (ab)+(ac) with a=3, b=-10, c=5 e) m(n+p) with m=3,

Mathematics

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Answers

6 parts
a
-16
b
-35
c
-6
d
-15
e
-27
f
-7

Step-by-step solution

18 steps

Here are the solutions to the problems:

Part a· 3 steps

  1. Substitute the given values a=2a=2, b=−3b=-3, and c=−5c=-5 into the expression a×(b+c)a \times (b+c).

    2×(−3+(−5))2 \times (-3 + (-5))
  2. Solve the expression inside the parentheses.

    −3+(−5)=−8-3 + (-5) = -8
  3. Multiply the result by aa.

    2×−8=−162 \times -8 = -16

    The final answer is −16\boxed{-16}.

Part b-35

  1. Substitute the given values a=−7a=-7, b=2b=2, and c=3c=3 into the expression a×(b+c)a \times (b+c).

    −7×(2+3)-7 \times (2 + 3)
  2. Solve the expression inside the parentheses.

    2+3=52 + 3 = 5
  3. Multiply the result by aa.

    −7×5=−35-7 \times 5 = -35

    The final answer is −35\boxed{-35}.

Part c-6

  1. Substitute the given values a=1a=1, b=−8b=-8, and c=2c=2 into the expression a×(b+c)a \times (b+c).

    1×(−8+2)1 \times (-8 + 2)
  2. Solve the expression inside the parentheses.

    −8+2=−6-8 + 2 = -6
  3. Multiply the result by aa.

    1×−6=−61 \times -6 = -6

    The final answer is −6\boxed{-6}.

Part d-15

  1. Substitute the given values a=3a=3, b=−10b=-10, and c=5c=5 into the expression (a×b)+(a×c)(a \times b) + (a \times c).

    (3×−10)+(3×5)(3 \times -10) + (3 \times 5)
  2. Perform the multiplications within each parenthesis.

    3×−10=−303 \times -10 = -30 3×5=153 \times 5 = 15
  3. Add the two results.

    −30+15=−15-30 + 15 = -15

    The final answer is −15\boxed{-15}.

Part e-27

  1. Substitute the given values m=3m=3, n=2n=2, and p=−11p=-11 into the expression m×(n+p)m \times (n+p).

    3×(2+(−11))3 \times (2 + (-11))
  2. Solve the expression inside the parentheses.

    2+(−11)=2−11=−92 + (-11) = 2 - 11 = -9
  3. Multiply the result by mm.

    3×−9=−273 \times -9 = -27

    The final answer is −27\boxed{-27}.

Part f-7

  1. Substitute the given values m=7m=7, n=8n=8, and p=−9p=-9 into the expression (m×n)+(m×p)(m \times n) + (m \times p).

    (7×8)+(7×−9)(7 \times 8) + (7 \times -9)
  2. Perform the multiplications within each parenthesis.

    7×8=567 \times 8 = 56 7×−9=−637 \times -9 = -63
  3. Add the two results.

    56+(−63)=56−63=−756 + (-63) = 56 - 63 = -7

    The final answer is −7\boxed{-7}.

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