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x²+8x+(8/2)²=-10+(8/2)²
(x+4)²=-10+16
x+4=√-10+6
x+4=+/- √-4
x+4=+/- (-2)
x1=-4+2
=-2
x2=-4-2
=-6
hp=(-2,-6)
x2 + 8x = 10
x2 + 8x + 8/2² = 10 + 64/4
(x - 4)² = 40 + 16
4
(x - 4)² = 56
4
(x - 4)² = 14
(x - 4) =√14
x - 4 = kurang lebih 3
x1 = -4 + 3 = -1
x2 = -4 - 3 = -7
HP : { -1,-7}