Math
Factor and solve: -1x^2 - 4x + 45 = 0
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Asked by
AnneS2
Last updated by
anonymous
-1x^2 - 4x + 45 = 0
-1(x^2 + 4x - 45 )= 0
-1(x )(x ) ( -5)( +9)=0
-1(x-5) (x+9) = 0
Solve:
-1(x-5)=0
-1(x) (-1)(-5)=0
-1x+5=0
-1x+5-5=0-5
-1x=-5
-1x/-1=-5/-1
x=5
Solve:
-1 (x+9) = 0
-1 (x) (-1)(+9) = 0
-1x-9=0
-1x-9+9=0+9
-1x=9
-1x/-1=9/-1
x=-9