Question

Which of the following is a factor of 1 + 27x^3?

1 + 3x

1 + 3x + 9x2

1 + 6x + 9x2

None of the above

Answer 1

\[1+27x^{3}\]
=\[1^{3}+27x{3}\]
=\[(1+3x)(1-3x+9x{2})\]

Answer 2

therefore the answer for your question is (1+3x)

Answer 3

thank you i understand now!!

Answer 4

u r welcome.. by the way in genaral
a^3 + b^3 = (a+b)(a^2 - ab + b^2)
a^3 - b^3 = (a-b)(a^2 + ab + b^2)

Answer 5

sir yes sir!