Question

simplify (a-2b) (3a² + 2ab -b²) and verify your result for a= -2, b=3​

Answer 1

Answer:

= -a²b×a³b²

= -a²+³b¹+²

= -a⁵b³

Verified:

If a = -2 and b = 3

- a²b = = (2)²×3=-4×3= -12

a³b² = (2)³× (3)²=8×9=72

-a²b²= -12×72 = -864

a⁵b³=-(2)⁵ × (3)³

= - 32×27

= -864

Hence, verified