Question

The sum of 3x2 +x+8 and x- 9 can be expressed as

Answer 1

2x + 5

Explanation:

((3x2)+x+8) + (x-9)

= ((6) + x +8) + (x -9)

= (14 +x) + (x-9)

= 14 + x + x -9

= 2x + 5

answered by g a u t h m a t h