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if x+y=12 and xy =27,then find the value of x^2+y^2
PLEASE HELP !​

Sagot :

VirαtKσhli

Answer:

90

Step-by-step explanation:

=> x + y = 12

=> x² + y² + 2xy = 144

=> x² + y² + 2 * 27 = 144

=> x² + y² = 144 - 54

=> x² + y² = 90

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