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anonymous

  • one year ago

help!!!! will medel and fan What is 19x^2 + 25x^2 ? a. 45x^4 b. 45x^2 c. 44x^4 d. 44x^2 What is (5x)(14x^3)? Select one: a. 70x^3 b. 19x^3 c. 70x^4 d. 19x^4 Simplify the expression: -4x^2(3x-7) a. -12x^3 + 28 b. -12x^3+ 28x^2 c. -12x^3 - 28x^2 d. -12x^3 -28

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  1. Luigi0210
    • one year ago
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    Since 19 and 25 have the same variable you are allowed to add them. You have to multiply for the second: 5x*14x^3=\(\color{red}{5*14*x*x^3} \) Distribute for the last one: \((-4x^2)(3x) + (-4x^2)(-7) \)

  2. anonymous
    • one year ago
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    So 1 is d

  3. anonymous
    • one year ago
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    2 is 70^4

  4. Luigi0210
    • one year ago
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    Right so far :) and \(70x^4\) yes xD

  5. anonymous
    • one year ago
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    thanks i fiured it out

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