Question

Factorise:
If x - y = 5 and x^2+ y^2 = 53 find the value of xy,​

Answer 1

Step-by-step explanation:

x²+y²=53

(x-y)²+2xy=53

5²+2xy=53

2xy=53-25=28

xy=28/2=14

[xy=14]ans.

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Answer 2

Answer:

X=7;Y=2

7-2=5;

7^2+2^2=49+4

=53