exam Maths Puzzle Numerical Ability

(7x^2-x+1)-(2x^2-x-3)-(5x^2+33x-10)

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exam Other Question

A rectangular picture frame is 5 inches higher then it is wide and has an area of 126 square inches. Write an equation whose solution is the width of the (picture frame.) Use facto The number of people who catch a cold t weeks after January1 is:
5t-3t squared+t cubed. The number of people who recover t weeks after January 1 is: t - t squared + 1/3t cubed.