Find the error in the equation: please show work: -3x^2(4x^2-5x+7)=-12x^4-15x^3+21x^2

asked Apr 16, 2022 58.1k views

12 votes

Find the error in the equation: please show work:
-3x^2(4x^2-5x+7)=-12x^4-15x^3+21x^2

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7 votes

Answer:

The middle term is negative but should be positive

Explanation:

Let's walk through doing it:

$-3x^2(4x^2 - 5x + 7)\\= -12x^4 + 15x^6 - 21x^2$

Pedro Mutter answered Apr 20, 2022

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