Question

If x-y=7 and xy =9 , find value of x square + y square

Answer 1

hey mate here is ur answer :-

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

49=x^2+y^2-18

x^2+y^2=49+18=67

so ur answer is 67.

hope it helps.

-vinay❣

Answer 2

Answer:

Hey mate, Good morning ♡

#Here's ur answer...☆☆☆

Step-by-step explanation:

$x - y = 7 \\ = > (x - y) {}^{2} = 49 \\ = > x {}^{2} - 2xy + y {}^{2} = 49 \\ = > x {}^{2} + {y}^{2} - 2(9) = 49 \\ = > x {}^{2} + {y}^{2} = 49 + 18 = 67(ans)$

Hope this helps you....

Pls mark as brainliest...♤♡◇♧

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