Question

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

Answer 1

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`