Fully simplify this equation; 3x^3 - x(3x+36) = 0
The first step is to multiply out the bracket
3x3 - 3x2 - 36x = 0
Then remove the common factor 3x
3x(x2 - x - 12) = 0
Then factorise the bracket, by looking for two numbers which multiply to give -12, and add to give -1
3x(x - 4)(x + 3) = 0
RO
Related Maths GCSE answers
All answers ▸A piggy bank contains 200 coins, 1/4 of these are 1p coins, 100 of these are 5p coins and the rest are 10p coins, how much is the piggy bank worth in £s?
What is meant by the term specific heat capacity?
Make x the subject of the equation. y = 4( 2 + x )/ (6x -1)
How do I tackle fractional powers?