Respuesta :

xxmaskiexxx
The answer is 4x^2 +5x+9

You will first solve the same variables such as x^2 

11x^2 - 7x^2 = 4x^2

now you will solve the variables with x 

-3x +8x = 5x

so the answer you will get will be 4x^2 +5x = 9