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14. The value of x2 + y2 when x - y = 6 and x + y = 14
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Answered by
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Answer:
(x+y)^2= x^2+y^2+2xy (1)
(x-y)^2=x^2+y^2-2xy (2)
(1)+(2)
6^2+14^2= 232/2=116
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Answered by
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Step-by-step explanation:
Given is
x–y=6
x= 6+y. -(1)
now,
x+y = 14
put value of x from eqn (1),
(6+y)+y= 14
6+2y= 14
2y = 14–6
2y= 8
y=4
x=6+4
x=10
Now x²+y²= (10)² + (4)²
= 100+16
=116. ans
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