a²+b²= 106, ab=45, then a²-b²=
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Answer:
The answer is 12 .
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Answer:
a^2 + b^2 =106 2ab =™90
(a+b)^2 = a^2+b^2+2ab
= 196
a+ b= √196=14
(a-b)^2 = a^2+b^2-2ab
=106-90
=16
a-b = √ 16= 4
a^2-b^2 = (a+b)(a-b)
= 14× 4
= 56
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