Factor x³ + 27 completely.
a) (x + 3) ( x² - 3x + 9)
b) (x + 3) (x² - 3x + 18)
c) (x + 3) (x² - 3x - 9)
d) (x + 5 ) (x - 3)
a) (x + 3) ( x² - 3x + 9)
b) (x + 3) (x² - 3x + 18)
c) (x + 3) (x² - 3x - 9)
d) (x + 5 ) (x - 3)
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Answer:
A. (x+3) (X2 - 3x +9)
Step-by-step explanation:
Rewrite muna
x^3+3^3
Apply the sum of cube Formula Eto Formula
x^3+y^3=\left(x+y\right)\left(x^2-xy+y^2\right)
So Magiging Ganito sya
x^3+3^3=\left(x+3\right)\left(x^2-3x+3^2\right)
\left(x+3\right)\left(x^2-3x+3^2\right)
Let's Refine na
\left(x+3\right)\left(x^2-3x+9\right) or (x + 3) ( x² - 3x + 9)
Answer:
None of the above
Step-by-step explanation:
(x+9) (x²+3)
x•x²=x³
9•3=27