Question

Tolong bantuin soal nomer 3 yang A & B dong. Bantuin pakai caranya ya biar mudeng. Makasih. ^_^

Answer 1

A)
√ x + √y = 5
2√x - √y = 1
jumlahkan
3√x = 6
√x = 2 --> √y= 3
x = 4 ---> y = 9

b)
1/x = a
1/y = b
a + b  = 10
5a - 3b = 26
eliminasi
5a + 5b = 50
5a - 3b = 26
kurangkan
8b = 24
b = 3 ---> x = 1/3
a = 7 --> y = 1/7