Question

Tentukan Hp dari x-2y = -5 , x²+y² = 25

Answer 1

(2y-5)² + y²  =25

4y² -20y + 25 +y² =25

5y² - 20 y =0

y=0  dan y=4

x= 2. 9 -5 = -5  dan x= 2. 4 -5 = 3

HP  {(-5,0),(3,4)}

Answer 2

X - 2y = -5 .... (1)
x² + y² = 25  ----->  diakarkan2
x + y = 5 .... (2)

x + y = 5
x - 2y = -5  -
3y = 10
y = 10/3
y = 3,33

x + y = 5
x + 3,33 = 5
x = 5 - 3,33
x = 1,67