if x+y=9 and xy=20 then find the value of x^2-xy+y^2 please answer its really urgent
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Step-by-step explanation:
(x+y)²-3xy=x²+y²-xy
(9)²-3×20=x²+y²-xy
81-60=x²+y²-xy
41=x²+y²-xy
Answered by
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Answer:
(x+y)²-3xy=x²+y²-xy
=(9)²-3×20=x²+y²-xy
=81-60=x²+y²-xy
= 41=x²+y²-xy
Step-by-step explanation:
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