Question

find the value of A^2+b^2 if a+b=12 and a-b=6​

Answer 1

Step-by-step explanation:

a+b=12___(1)

a-b=6____(2)

(1)+(2)=> 2a=18

a=9

(1)-(2)=> 2b=6

b=3

a²+b²=9²+3²=81+9=90