book Maths Puzzle Numerical Ability

x^3+x^2+2x+2

and

2x^3+8x^2-9x+36

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book Other Question

Renee can ride her bike 60 miles in 1 hour less time than it takes Sue to ride 60 miles. Renee's rate is 3 miles faster than Sue's rate. Find Renee' rate.

this is as far as I go In a walkathon to raise money for a charity, Elisa walked a certain distance at 5mi/h and then jogged twice that distance at 8mi/h. Her total time walking and jogging was 2 hours