carilah x dan y! √x + √y = 4 2√x - √y = 1

Kita kuadratkan kedua sisinya.

√x + √y = 4
√x = 4 - √y

Substitusikan

2√x - √y = 1
2 ( 4 - √y ) - √y = 1
8 - 2√y -√y = 1
- 2√y -√y = -7
- ( 2√y + √y ) = -7
( 2√y + √y ) = 7
3√y = 7
√y = 7/3
y = 49/9
y = 5 4/9

Substitusikan nilai √y

√x + √y = 4
√x + 7/3 = 4
√x = 4 - 7/3
√x = 12/3 - 7/3
√x = 5/3
x = 25/9

x = 2 7/9

Semoga membantu