book Maths Puzzle Numerical Ability

6X^ -3X+5x^ +2x

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book Other Question

When graphing a linear inequality, how do you know if the inequality represents the area above the line? one side of a triangle is 1 ft longer then the shortest side, and the third side is as long as the shortest side. If the perimeter is less than 25 ft what is the range of the shortest side?

A= 1/2 ab
-25= 2a -1/2b = c+ 1