Expand and simplify (x-2)(2x+3)(x+1)

To simply this expression means to write this same expression in its lowest terms. The first step we need to do is expand two of these brackets, we will start with the bracket in the middle and the last bracket. Doing this gives, (x-2)(2x+3)(x+1)=(x-2)(2x^2+2x+3x+3)we can collect like terms to simplify the second bracket: (x-2)(2x^2+2x+3x+3)=(x-2)(2x^2+5x+3). Now we can expand these two brackets, this gives (x-2)(2x^2+5x+3)=2x^3+5x^2+3x-4x^2-10x-6We can now simplify this expression by collecting like terms: 2x^3+5x^2+3x-4x^2-10x-6=2x^3+x^2-7x-6.Therefore, through expanding and collecting like terms we can see that (x-2)(2x+3)(x+1)=2x^3+x^2-7x-6.

SM

Related Maths GCSE answers

All answers ▸

Solve 7x + 6 > 1 + 2x


gradient and differentiation


A flight travels at 750kmph for 7 hours and 18 minutes, work out the distance travelled? Then convert 750 km/h into metres per second.


Solve the simultaneous equations, x^2+y^2=41, and y=2x-3