SOLUTION: x^2 + 3x - 18 = 0
Use the following quadratic equation to complete parts a and b below. You must show all work.
a. Solve by factoring.
b. Solve using the quadratic formula
Question 195080: x^2 + 3x - 18 = 0
Use the following quadratic equation to complete parts a and b below. You must show all work.
a. Solve by factoring.
b. Solve using the quadratic formula Answer by awang1996(50) (Show Source):
You can put this solution on YOUR website! x^2 + 3x - 18 = 0
(x+6)(x-3)=0
x=-6 x=3
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quadratic formula:
-b plus or minus the square root of "b^2-4ac"
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2a
x^2 + 3x - 18 = 0
-3 plus or minus the square root of "(-3)^2-4(1)(-18)
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2(1)
-3 plus or minus the square root of "9+72"
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2
-3 plus or minus the square root of "81"
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2
-3 plus or minus "9"
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2
the two equations you have:
-3+9 -3-9
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2 2
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