Question

Bantu no 5 kakk . fastttt

Answer 1

X+y-1 = 0
x = 1-y
x²+y²=25
(1-y)²+y² = 25
1-2y+y²+y² = 25
2y²-2y-25+1 = 0
2y²-2y-24 = 0
y²-y-12 = 0
(y+3)(y-4) = 0
y+3 = 0 atau y-4 = 0
y=-3 atau y=4
untuk y=-3
x = 1-y
x = 1-(-3)
x = 4
titikya (4,-3)
untuk y=4
x = 1-y
x = 1-4
x = -3
titiknya (-3,4)
jadi HPnya adlah: {(4,-3),(-3,4)}

Answer 2

X + y = 1 -> x = 1 - y
x^2 + y^2 = 25
(1-y)^2 + y^2 = 25
y^2 - 2y + 1 = 25
y^2 - 2y +1 - 25 = 0
y^2 - 2y - 24 = 0
(y-6)(y+4) = 0
y = 6 dan y = -4
untuk y = 6
x = 1 - 6 = -5
untuk y = -4
x = 1-(-4) = 5
HP = {(-5,6),(5,-4)}