exam Maths Puzzle Numerical Ability

m^3+2m^2-3m=0 Solve each equation so Far i have

M(M^2+2m-3)=0

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exam Other Question

let f(x)=3-8x2+17x-9. use the factoe theorem to find other soulations to f(x)-f(1)=0, besides x=1 you have 80 yards of fencing to enclose a rectangular region. find the dimensions of the rectangle that maximize the enclosed area. what is the maximum area?