exam Maths Puzzle Numerical Ability

Factoring when either square is a sqaure of a polynomial.

A^2-(b+c)^2

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exam Other Question

An object is projected upward with an initial velocity of 251 feet per second from a height of 32 feet. During what time period will its height exceed 91 feet? A line passing through (-4,4) and (x,-8) is perpendicular to a line with slope 5/12. Find the value of x.