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y2 = -4x + 8
y1=y2
-2x^2 + 16x - 34 = -4x + 8
-2x^2 + 16x + 4x - 34 - 8 = 0
-2x^2 + 20x - 42
(-2x + 6)(x - 7)
-2x + 6 = 0
x = 3
x = 7
y = -4x + 8
y = -4.3 + 8
y = -4
y = -4x + 8
y = -4.7 + 8
y = -20
(3,-4) atau (7,-20)
2. sya gatau caranya tapi 19 × 5 = 195 dan a < b maka a = 5 dan b = 19