Question

Find the product
(i) 4m x (m²+ n² - 2)
(ii) (a²- 1)(a +3)
(iii) (3m - 2n) (4m + n)
​

Answer 1

Step-by-step explanation:

1

4m×(m2+n2-2)

=m2+n2-2-4m

=n2+2=m2-4m

=3n2=3m2

=3m2+3n2

2

(a2-1) (a+3)

=(a2)(3a)

=3a2

3

(3m-2n) (4m+n)

(2n-n) (4m+3m)

(1n) (7m)