Question

8. Simplify and verify your result for a = 1 and b = -1.

ii. 4a(2a2 - 6a) - a(a + 2) – 3a3 (5a2 - 4a +3)​

Answer 1

Answer:

-28

Step-by-step explanation:

4×1 (2×1×1-6×1)-1 (1+2)-3×1×1×1 (5×1×1-4×1+3)

4 (2-6)-3-3 (1+3)

4×-4-3×4

-16-12

=-28