Question

if a:b = 4:8 , find (16a - 3b) (12a+6b)

Answer 1

Answer:

Correct option is D)

subtract 4a−7ab+3b+12 from 12a−9ab+5b−3

=12a−9ab+5b−3−(4a−7ab+3b+12)

=12a−9ab+5b−3−4a+7ab−3b−12

=8a−2ab+2b−15