Question

of X+y=8 and xy=15 ,then xpower2+ypower2​

Answer 1

Answer:

solve above 2 equation then find the value of x, y 3 ,5 these are 2 value final answer is 3*3+5*5 =34

Answer 2

Answer :

x2+y2=34.

Step-by-step explanation:

Given : x + y = 8x+y=8

          xy = 15.xy=15.

To Find : x^2 + y^2.x2+y2.

Solution:

Identity :

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

=x2+y2+2xy

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

x2+y2=(x+y)2−2xy

x^2 + y^2= 8^2 - 2×15

x2+y2=64−2×15

x^2 + y^2= 64 - 30

x2+y2=64−30

x^2 + y^2 = 34.

x2+y2=34.

Thus the value of x^2 + y^2 = 34

x2+y2=34.