Question

Find the value of the product for a = 1, b = 2 and c = 3.

Answer 1

Step-by-step explanation:

(4a

2

+3b)(9b

2

+4a)

=36a

2

b

2

+27b

3

+16a

3

+12ab

Put the value of a=1 and b=−2, we get

(4a

2

+3b)(9b

2

+4a)

=36×(1)

2

×(−2)

2

+27×(−2)

3

+16×(1)

3

+12×(1)×(−2)

=36×4−27×8+16×1−12×2

=144−216+16−24=−80