Question

if x+y=27 and xy=27 find the value of x squar
e + y square​

Answer 1

Answer:

x+y=27

by sbs

(x+y)²=27²

x²+y²+2xy=729

x²+y²+2*27=729

x²+y²+54=729

x²+y²=729-54

x²+y²=675