How can we solve ifx+y=15 and xy=56,then what is the value of x^2+y^2.This math problem I got as my compitative examination, so how to answer if x+y=15 and xy=56,then what is the value of x^2+y^2?
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The answer for If x+y=15 and xy=56,then what is the value of x^2+y^2 is 113. We can simply solve If x+y=15 and xy=56,then what is the value of x^2+y^2 ? By below steps. Mathematics was playing a key role in Every Aspect
Here you can see the simple form of problem solving
(x+y)^2= x^2+y^+2xy
(15)^2 = x^2+y^2+2(56)
225 =x^2+y^2+112
225-112 =x^2+y^2
113=x^2+y^2
Answer is 113