40r^2t^2-30rt
12p-8
\left(x-2\right)\left(x+2\right)
\left(x+3\right)\left(x-13\right)
lnx\sqrt{lnx}lnx =ln x\sqrt{x}x
\left(x-6\right)\left(x-1\right)
a lorry travels a distance of 123km in 1 and half hours calculate the average speed of the lorry
7a\left(a+1\right)-6a\left(7-6a\right)
WHAT IS 1/4 AS A DIVISION
