Question

Given x - y = 18 and x² - y² = 20, find the value of x + y.

Answer 1

Answer:

heya mate ☺

✏ Given,

$x - y = 18 \\ and \: x^{2} - y ^{2} = 20$

✏ Solution,

$x ^{2} - y ^{2} = 20 \\ = > (x + y)(x - y) = 20 \\ putting \: back \: the \: value \: of \: \\ (x - y) \\ = > (x + y)(18) = 20 \\ = > (x + y) = 20 \div 18 \\ = > (x + y) = 10 \div 9$

⭐ hope it helps u ⭐

Answer 2

Answer:

given,

x-y=18

now,

x²-y²=20

or, (x+y) (x-y) =20

or, (x+y) ×18=20

or, x+y=20/18

or, x+y=10/9

:. value of x+y=10/9.

gm❤(hope u like it)