if x + y =12 and xy =14 find the value of. x ²+ y ².
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Answered by
30
Answer:
(x+y)^2=x^2+y^2+2xy
12^2=x^2+y^2+2(14)
144-28=x^2+y^2
116=x^2+y^2
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Answered by
7
Answer:
Step-by-step explanation:
x+y =12 , xy=14
(x+y)² =x² + y² +2xy
(12)² = x²+y² +2(14)
144 = x²+y²+28
116 = x²+y²
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