Question

if x + y = 4 , x - y = 3 find x square + y square, xy.​

Answer 1

x + y = 4

x - y = 3 [by adding]

______

2x = 7

x = 7/2.

= 7/2 + y = 4

= 7 + 2y = 8

2y = 1

y = ½

given Question

x² + y and xy

for x² + y

= (7/2)² + 1/2

= 9/4.