exam Maths Puzzle Numerical Ability

Determine whether the given numbers are solutions of the inequality
x-2>9; -4,0,5,15

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exam Other Question

Simplify completely: 3^x(3^x+4)(5^2x)(25^x)/ (1/3)^x I think the answer is (3^3x+4)(5^3x) ???????????? The process of writing a quadratic equation in the form (x + a)2nd power = b is called.