m dan n adalah persamaan kuadrat x²+4x-5=0 Carilah:
-(m-2) dan (n-2)
- (2m+n) dan (2n+m)
- (2m-3) don (2n-3)
-(m-2) dan (n-2)
- (2m+n) dan (2n+m)
- (2m-3) don (2n-3)
x²+4x-5=0
(x+5) (x-1)
x1 = m = (-5)
x2 = m = (1)
m-2 = -7
n-2 = -1
2m+n = 2(-5) + 1 = -9
2n+m = 2(1) -5 = -3
2m-3 = 2(-5) - 3 = -13
2n-3 = 2(1) - 3 = -1
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