Question

if X + Y =12 and xy= 15 find the (X^2 + Y^2)​

Answer 1

Answer:

114

Step-by-step explanation:

using (x+y)^2=x^2+y^2+2(xy)

(12)^2=x^2+y^2+2(15)

144=x^2+y^2+30

x^2+y^2=144-30

x^2+y^2=114

Answer 2

Answer:

the answer is 114

Step-by-step explanation:

GIVEN. X+y=12

x×y=15

required to find out =x^2+y^2

SOLUTION

we know that

(X+y)^2=x^2+y^2

x^2+y^2=(x+y)^2-2xy

12^2-2×12

144-30

114

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