Question

Find

`( {10x}^(2) - 11x + 8) + ( {2x}^(2) + 7x - 5 )`
​

Answer 1

`12x^2-4x+3`

Explanation:

Parentheses do not matter in this equation.

`(10x^2-11x+8)+(2x^2+7x-5)=\\10x^2-11x+8+2x^2+7x-5=\\12x^2-11x+8+7x-5=\\12x^2-4x+8-5=\\12x^2-4x+3`

Our answer is
`12x^2-4x+3`