Question

If x+y=7, x-y=1, then find the value of x^2+y^2

Answer 1

Answer:

25

Step-by-step explanation:

given

x+y=7 consider as equ 1

x-y=1 consider as equ 2

equ1+equ2

x+y+x-y=7+1

2x=8

x=4

sub x=4 in equ 1

we get

y=3

Now,

x²+y²=(4)²+(3)²

16+9=25