Answer: 6x^2 - 10
Explanation: (5x^2 + 2) - (-4x^2 + 7) + (-3x^2 - 5). so first we’ll take the parentheses away. we have to distribute the negative in the second parentheses.
5x^2 + 2 + 4x^2 - 7 - 3x^2 - 5. now we can add and subtract the like terms. so we can add 5x^2 + 4x^2 - 3x^2 = 6x^2 and 2 - 7 - 5 = -10 so we have 6x^2 - 10.
hope this helped!