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 ▸How to solve the maths GCSE question about Hannah's sweets that went viral
Expand and simplify the following: (2x+3)(2x+5)
Please factorise fully: 2a^2 + 6a
A triangle has 3 angles of 60 degrees, (5y-40) degrees, and (2y+20) degrees. Show that the triangle is equilateral.