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 ▸Expand and simplify the following: (2x+3)(2x+5)
A linear sequence starts a + 2b, a + 6b ,a + 10b ,…….. ,…….. The 2nd term has value 8. The 5th term has value 44. Work out the values of a and b
Factorise the following- A) 4x+12xz. B) 3xy + 6y d) 4A^2B^2+ 8AB^2 +16AB^3
The equation of the regression line of y (retail price, £) on x (number of pages) for a set of books is y = 0.02x + 1.35. How can I use this equation?