exam Maths Puzzle Numerical Ability

Rewrite the middle term as the sum of two terms and then factor completely. 15x^2 + 17x + 4

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exam Other Question

Simplify and state any restrictions.
(2x-6)^2/(x^2-4) * (x^2+3x-10)/(2x^2+2x-24) divided by (2x^2+4x-30)/(3x^2+7x-20) The perimeter of an isosceles triangle is 100 centimeters. If two sides are equal length and the third side is 10 centimeters longer than the others, find the length of the three sides