Question

(i) (m + n)(2m + n) + (m + 2n)(m – n) + 4n²
iii) (1.5x – 4y)(1.5x + 4y + 3) – 4.5x + 5y + (3y)(5y​

Answer 1

Answer:

1st answer :

according to question,

by using binomial trick

= (m×2m+m×n)+(n×2m+n×n) + (m×m-m×n)+(2n×m-2n×n) + 4n^2

= 2m^2+mn + 2mn+n^2 + m^2-mn + 2nm-2n^2 + 4n^2

Hence, the answer will be ( 2m^2 + 2mn + n^2 ) + ( m^2 + 2nm - 2n^2 ) +4n^2