Question

(a) (4a² – 5a + 6) – (3a² - 2a – 1) - (a² + a)
(b) (15x² + 8x + 7) - (5x² – 3x - 4) - (3x² + 8)​

Answer 1

Answer:

a] - 4a+7. and b]. 7x²+11x+3

Step-by-step explanation:

ans= a]

= 4a²-5a+6-3a²+2a+1-a²-a

= 4a²-3a²-a²-5a+2a-a+6+1

= 4a²-4a²-5a+a+7

= 0 - 4a +7

= - 4a +7

ans = b]

= 15x²+8x+7-5x²+3x+4-3x²-8

= 15x²-5x²-3x²+8x+3x+7+4-8

= 15x²-8x²+11x+11-8

= 7x²+11x+3