how do i factorise 6x+9x cubed?
Answers
Answered by
0
if your is (6x+9x)³ then answer is
factorise (6x+9x)³
= (15x)³ = 3375x³
if your question is (6x+9)³ then answer is
(6x+9)³ = (6x)³+9³+3(6x)²×9+3(6x)×9²
= 216x³+721 +3×36×9x²+3×6×81x
= 216x³+721+972x²+1458x
= 216x³+972x²+1458x +721
Similar questions