Question

b) 3(x2 – 9)(x + 4) and 12(x - 3)2​

Answer 1

3(x2-9)(x+4)

= x2+x=3+9-4

=x2+x =12-4

=x2+x=8

=x+x=8÷2

=2x=4

=x=4÷2

=x=2

answer

12(x-3)2

=(x-3)=12×2

=(x-3)=24

=x-3=24

=x=24+3

=x=27

answer