Question

If x +y =13 and xy =7, then (x²
+ y²)=
a) 175
c) 138
b) 155
d) 183
pls tell correct answer
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Answer 1

Answer:

155

Explanation:

^2 means square

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

= 13^2 = x^2 + y^2 + 2*7

=169 = x^2 + y^2 + 14

=169 - 14 = x^2 + y^2

= 155 = x^2 + y^2

Hope It Helps!

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Answer 2

Are you fine Sonakshi....

Have you eaten something ?

Have a nice evening...

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