7. Find the value of (x2 + y2), if xy = - 15 and x - y = 6.
Answers
Answered by
9
Pls mark as brainliest answer
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Answered by
18
Answer: (+6)
Step-by-step explanation:
using formula- (a²+b²)= (a-b)²+2ab
sum= (x²+y²)
= (x-y)²+2xy
putting the value,x-y=6 and xy= -15
= (6)²+ 2×(-15)
= 36 + (-30)
=36-30
= 6 ans
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