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Determine which binomial is a factor of -2x^3 + 14x^2 - 24x + 20 A.) x + 5 B.) x + 20 C.) x - 24 D.) x - 5

Algebra
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its mcq so its easy to solve X is definitely wrong coz X is not the same as x
if (x+5) is a factor, then x = -5 would make the equation 0
if (x-5) is a factor, then x= 5 makes the equation 0

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Other answers:

substitute x = 5 and x = -5 see which one makes it 0
Neither of them do.
check again
There all 4 little x's I just didn't mean to make the two middle one's capital x's.
So I'll try the other two to see which one is right
i managed to find the answer by substituting a value
try x = 5 again
ok, I will
When I put the equation like this -2(5)^3 + 14(5)^2 - 24(5) + 20 I get 100 + 1900 - 120 + 20 and when you add it up it equals 4900
Is the answer x = 5 ?
yes, x=5 is the root , so x-5 is the factor.
So the answer is D ? x - 5
yup.
I wish I understood how you got that bc I tried to plugg 5 into where the x's are and I got the answer 4900 not 0
5^3 = 125 125*2 = 250
5^2 = 25 25*14=350
24*5=120
Ok, thanks :)
got it ?

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