Question

1. x³ + 27 solve please​

Answer 1

Answer

Because factoring x^3+27 is the same as finding where the graph passes through the x axis, we can just set the equation equal to zero and solve. f(x)=(x+3)(x2−3x+9)

Explanation:

Let f(x) = x³ + 27

0 = x³ + 27

x³= -27

x = -3

This means that x = -3 is the only zero of the graph of f(x). Since we know (x+3) is one factor of f(x), to find the 2nd factor,

x3+27x+3

We get the second factor to be x2−3x+9.

Therefore, f(x)=(x+3)(x2−3x+9)