Question

Expand the following.
1. (i)(x + 5)²
2. (i) (7y8)²
3. (1) (a² + 1)2
(ii) (3x + 4)2
(1) (-29)2
(1) (3a? +62)2​

Answer 1

Answer:

by using identity (a+b) ^2= a^2+b^2+ 2ab

(1) x^2 + 25 + 2×5×x

=x^2+25+10x

(a^2+1) ^2=a^4 + 1 +2a^2

(3x+4) ^2= 9x^2 + 16 + 24x

hope it helps you