Question

If x + y = 12 and xy = 27, find the value of x2 + y2
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Answer 1

Answer:

90

Explanation:

$( x+y)^{2} = x^{2} + y^{2} +2xy$

$12^{2} = x^{2} + y^{2} +2(27)\\144 = x^{2} + y^{2} + 54$

144 - 54 = $x^{2} +y^{2}$

90 = $x^{2} +y^{2}$

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Hope it helps.

Answer 2

Answer:

90

Explanation:

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