Question

Q. If, a=54286 and bat, then what
will be the value of atb²
2​

Answer 1

Step-by-step explanation:

a2 + b2

= (2)2 + (-2)2

= 4 + 4

= 8 is the required value.

(ii) a2 + ab + b2

= (2)2 + 2 × (-2) + (-2)2

= 4 - 4 + 4

= 4 is the required value.

(iii) a2 - b2

= (2)2 - (-2)2

= 4 - 4

= 0 is the required value.