|-2x|=8 dngn dua cara

Bab Nilai Mutlak
Matematika SMA Kelas X

|-2x| = 8

-2x = 8
x = 8/-2
x = -4

-2x = - 8
x = -8/-2
x = 4

HP = {-4, 4 }

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|-2x| = 8
(-2x)² = 8²
(-2x)² - 8² = 0
(-2x + 8) (- 2x - 8) = 0
-2x + 8 = 0
-2x = - 8
x = 4

-2x - 8 = 0
-2x = 8
x = -4

HP = { - 4, 4 }