exam Maths Puzzle Numerical Ability

(5ab)(-2a^2b)^3

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exam Other Question

One leg of a right triangle is 2 ft longer than the shorter side. If the
length of the hypotenuse is 18 ft, how long is each leg?
Can somebody please help me?

2. What three techniques can be used to solve a quadratic equation? Demonstrate these techniques on the equation "12x2 - 10x - 42 = 0".