exam Maths Puzzle Numerical Ability

Can someone assist me. Thank You
f(x)=x^2-2x-6

Read Solution (Total 0)

exam Other Question

two runners leave the same point,running in opposite directions .One runneer runs 1 mi/hr faster than the other does.After running for two hours the runneres are 50 miles apart.How fast does each run?
help asap please (4 cubert 9x+10)^3