If a+b=7 & ab=12 then find the value of a^2+b^2
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Answered by
1
a+b=7
squaring both sides
(a+b)²=49
a²+b²+2ab=49
given that ab=12
a²+b²+2×12=49
a²+b²=25
Answered by
1
My answer is also the same as above and it is right
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