exam Maths Puzzle Numerical Ability

Multiply:
((x^2+x-12)/(x^2-x-20))X((x^2+2x-35)/(x^2+9x+14))

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exam Other Question

Could you show me the steps you take to solve:
The sum of two integers is thirty. Eight times the smaller integer is six more than five times the larger integer. Find the integers. Could you please help me solve this problem? It is:
tan2x = 1 - secx