Question

Find the values of the following polynomials at a = -2 and b = 3.
(a) a2 + 2ab + b2 (b) a2 – 2ab + b2

Answer 1

Answer:

Given expression is  a  

2

+2ab+b  

2

 

Substituting the given values of a and b , We get

(−2)  

2

+2(−2)(3)+(3)  

2

 

=4−12+9

=1