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