Question

if x square plus y square is equal to 9 and xy is equal to 8 then x plus y is equal to ??​

Answer 1

Answer:

answer will be 5

Step-by-step explanation:

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

=9+2×8

(x+y)^2=25

x+y=√25

x+y=5

Answer 2

(x+y)²= x²+ y²+2xy

(x+y)²= 9+2×8

(x+y)²= 25

x+y=√25

x+y= 5