Dengan memfaktorkan, tentukan himpunan penyelesaian untuk persamaan kuadrat dibawah ini! A) x²-5x-14=0 B) x²-x-6=0 C) x²-16=0 Tolong jawab smua... Pakai cara & yg jelas. Terima kasihh..
irfanmatondang
A . x2 - 5x - 14 = 0 ( x - 7 ) ( x + 2 ) x = +7 v x = - 2
b . x2 - x - 6 = 0 ( x - 3 ) ( x + 2 ) x = +3 v x = -2
c . X2 - 16 = 0 x ( x - 16 ) x = +16
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Rifqi1799
A. x²-5x-14=0 (x+2) (x-7) = 0 x = -2 ∨ x = 7 B. x²-x-6=0 (x+2) (x-3) = 0 x = -2 ∨ x = 3
( x - 7 ) ( x + 2 )
x = +7 v x = - 2
b . x2 - x - 6 = 0
( x - 3 ) ( x + 2 )
x = +3 v x = -2
c . X2 - 16 = 0
x ( x - 16 )
x = +16
(x+2) (x-7) = 0
x = -2 ∨ x = 7
B. x²-x-6=0
(x+2) (x-3) = 0
x = -2 ∨ x = 3