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dan y = 4x^2 - 4x + 5 = 0
maka,
y = 4(-2)^2 - 4(-2) + 5
y = 4(4) + 8 + 5
y = 16 + 8 + 5
y = 29
jika x = -1
dan y = 4x^2 - 4x + 5 = 0
maka,
y = 4(-1)^2 - 4(-1) + 5
y = 4(1) + 4 + 5
y = 4 + 4 + 5
y = 13
dst...