If a+b=7 and ab=12,find the value of a*2+b*2=
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Answered by
0
Answer:
answer is 24
Step-by-step explanation:
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Answered by
1
Step-by-step explanation:
a+b=7,
squaring both sides,
(a+b)^2=(7)^2
a^2+2ab+b^2=49
a^2+2(12)+b^2=49
a^2+24+b^2=49
a^2+b^2=49-24
a^2+b^2=25
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