Question

1. Add:
4x² + 5x – 7, - 3x² + 3x – 4 and x2 - 1​

Answer 1

Answer:

4x^2+5x-7+(-3x^2+3x-4)+x^2-1=

(4-3+2)x^2 +(5+3)x +(-7-4-1)=

3x^2 +8x -12