Question 221864: please help me with these problems. I can't seem to understand.
45z^3 - 90z^2+ 40z
and
z^2 - 14z + 24
thank you! Found 2 solutions by Alan3354, stanbon:Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! Are you being asked to factor or to solve?
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45z^3 - 90z^2+ 40z
Factor:
= 5z(9z^2-18z+8)
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= 5z(3z-2)(3z-4)
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If you need to solve, set each factor equal to zero and solve to get:
z = 0, z = 2/3, z = 4/3
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and
z^2 - 14z + 24
Factor:
= z^2-12z-2z+24
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= z(z-12)-2(z-12)
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= (z-12)(z-2)
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If you need to solve, set each factor equal to zero and solve to get:
z = 12 or z = 2
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Cheers,
Stan H.
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