exam Maths Puzzle Numerical Ability

eight more than the square of a number is six times the number

the length of a rectangle is 2 ft more than the width. the area is 42 sq. ft. find the width

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exam Other Question

A rectangular solid has a base with length 2 cm and width 3 cm. If the volume of the solid is 42 cm^3, find the height of the solid. [Hint: The volume of a rectangular solid is given by V=LWH.] Can someone tell me if there are "like terms" in this equation?

12rt - 10r + 18t

Thanks