exam Maths Puzzle Numerical Ability

3/2x-15=-12

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i need to use the discriminant to determine the number of solutions of this quadratic equation, and whether the solutions are real or complex. i have to find the roots, but i do have to determine the number and types of solutions. x2 + 6x - 7 = 0 The area of a right triangle is 120 sq. in. The longer leg is 4 more than twice the shorter leg. Find the length of each leg. Show all work to receive credit.