Question

1. If A = 5x2 - 2x + 3
B = x2 - 7x - 6
C = - 2x2 + 7, find
(a) A + 2B-C
​

Answer 1

Step-by-step explanation:

= 5x2 - 2x + 3 + 2(x2 -7x -6) - (-2x2 +7)

= 5x2 - 2x + 3 + 2x2 -14x -12 + 2x2 - 7

= 9x2 - 16x - 16

hope it's correct :)