Question

if a+b=10 and ab=16,find value of:1.)a^2-ab+b^2 and2.) a^2+ab+b^2

Answer 1

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Answer 2

1)a^2+b^2-16=68-16=52 (a+b=10 by squaring on both sides we get a^2+b^2+2×ab=100
a^2+b^2+2×16=100
a^2+b^2=68
3)68+16=84
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