Factor completely: 5x 3 + 8x 2 – 5x + 8
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Factor completely: 5x 3 + 8x 2 – 5x + 8
Are you sure that isn't?
As it is with that +8 at the end it is not nicely factorable.
But with a -8, it is. Let me know before I proceed.
if the equation is as galactus had written, then proceed as follows;
5x^3+8x^2-5x-8
now see carefully-
(5x^3+8x^2)-(5x+8)
x^2(5x+8)-1(5x+8)
(x^2-1)(5x+8)
so;(if the equation is equal to zero)
x= +1,-1,-8/5
Dude, got it or not?
Remember, you can factor it further because of the
Yes! By using the formula-> a^2-b^2=(a-b)(a+b)
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