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Q: How do you solve x3 plus 125 is equals to 0?

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It is x = -5

x3 + 4x2 + 6x + 24 = (x2 + 6)(x + 4)

IMPOSSIBLE

cube root of 216 = 6 > X= 6

It is a cubic polynomial in x and its value depends on the value of x.

No.

y2=x3+3x2

No, it is not.

x4 - 1.We can not "solve" this as we have not been told the value of x. However, we can simplify this expression:We have an x and a minus x here which will cancel out. Likewise the x2 and x3 will cancel out with the -x2 and -x3 respectively. This therefore leaves us with just x4 - 1.

(xn+2-1)/(x2-1)

x3 + 125 Use the sum of two cubes. (x+5)(x2-5x+25)

x3 + 2x2 - 8x + 5 = 0 x(2x - 8) + 5 = 0

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