Question

(5x^2-7)-(-4x^2+6x-3)

Answer 1

5x^2-4+4(x^2)-6x

Explanation:

first you need to remove the unnecessary parentheses it should look like this: 5x^2-7-(4(x^2)+6x-3)

then you should calculate the sum it should look like this: 5x^2-4+4(x^2)-6x and that is your answer