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dan y=2x + 4
kedua disubtitusikan
2x + 4 = x² + 2x + 3
= x² + 2x + 3 - 2x - 4
= x² -1
0= x² - 1
0= (x + 1) (x -1)
x + 1 = 0 dan x-1 = 0
jadi jadi
x= -1 x=1
lalu dimasukan kedalam persamaan y=2x + 4
~ x= -1
y= 2x + 4
y= 2(-1) + 4
y= -2 + 4
y= 2
Hp = (x,y)= (-1, 2)
~ x= 1
y= 2x + 4
y= 2(1) + 4
y= 6
Hp= (x,y) = (1,6)
jadi Hp nya ada 2
yaitu
Hp = {(-1,2) , (1,6)}
2x + 4 = x² + 2x + 3
0 = x² + 3 - 4
0 = x² - 1
0 = (x + 1) (x-1)
x + 1 = 0 atau x -1 = 0
x = -1 x = 1
y = 2x + 4 y = 2x + 4
= -2 + 4 = 2 + 4
= 2 = 6
Hp = ((-1,2) , (1,6))