If x + y = 8 and xy = 15, find x to the power 2 + y to the power 2.
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Answered by
2
(x+y)2=x2+y2+2xy
(8)2=x2+y2+2 (15)
64-30=x2+y2
34=x2+y2
(8)2=x2+y2+2 (15)
64-30=x2+y2
34=x2+y2
Answered by
1
(x+y)2=X2+Y2+2xy
(8)to the power 2=X2+Y2+2*15
64=X2+Y2+30
64-30=X2+Y2
34=X2+Y2
(8)to the power 2=X2+Y2+2*15
64=X2+Y2+30
64-30=X2+Y2
34=X2+Y2
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