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Find the Product of sqrt(3) and 2sqrt(5) 2. Write the expansion of 2x(sqrt(3) - 4sqrt(2)) 3. find the Sun of (3sqrt(5)-4sqrt(2)) and (3sqrt(5)+5sqrt(2)) 4. Simplify sqrt(240)

Mathematics

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Here are the solutions to your homework problems:

  1. Find the Product of 434\sqrt{3} and 252\sqrt{5}
  1. Multiply the coefficients and the terms under the square root.

    (43)×(25)=(4×2)×(3×5)(4\sqrt{3}) \times (2\sqrt{5}) = (4 \times 2) \times (\sqrt{3} \times \sqrt{5})
  2. Simplify the product.

    8×3×5=8158 \times \sqrt{3 \times 5} = 8\sqrt{15}

    The product is 815\boxed{8\sqrt{15}}.

    1. Write the expansion of 2x(43−2)2x(4\sqrt{3} - \sqrt{2})
  3. Distribute $2x$ to each term inside the parenthesis.

    2x(43−2)=(2x×43)−(2x×2)2x(4\sqrt{3} - \sqrt{2}) = (2x \times 4\sqrt{3}) - (2x \times \sqrt{2})
  4. Simplify each product.

    8x3−2x28x\sqrt{3} - 2x\sqrt{2}

    The expansion is 8x3−2x2\boxed{8x\sqrt{3} - 2x\sqrt{2}}.

    1. Find the Sum of (35−42)(3\sqrt{5} - 4\sqrt{2}) and (35+52)(3\sqrt{5} + 5\sqrt{2})
  5. Combine the two expressions by addition.

    (35−42)+(35+52)(3\sqrt{5} - 4\sqrt{2}) + (3\sqrt{5} + 5\sqrt{2})
  6. Group like terms (terms with 5\sqrt{5} and terms with 2\sqrt{2}).

    (35+35)+(−42+52)(3\sqrt{5} + 3\sqrt{5}) + (-4\sqrt{2} + 5\sqrt{2})
  7. Add the coefficients of the like terms.

    (3+3)5+(−4+5)2=65+12(3+3)\sqrt{5} + (-4+5)\sqrt{2} = 6\sqrt{5} + 1\sqrt{2}

    The sum is 65+2\boxed{6\sqrt{5} + \sqrt{2}}.

    1. Simplify 240\sqrt{240}
  8. Find the largest perfect square factor of 240.

    The factors of 240 are 1,2,3,4,5,6,8,10,12,15,16,20,24,30,40,48,60,80,120,2401, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240.
    The perfect square factors are 1,4,161, 4, 16. The largest is 16.
    So, 240=16×15240 = 16 \times 15.

  9. Rewrite the square root using the factors.

    240=16×15\sqrt{240} = \sqrt{16 \times 15}
  10. Simplify the perfect square factor.

    16×15=415\sqrt{16} \times \sqrt{15} = 4\sqrt{15}

    The simplified form is 415\boxed{4\sqrt{15}}.

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