book Maths Puzzle Numerical Ability

needing help!!!
Find the lowest denominator of {{{p+3/p^3+7p+10}}} and {{{p+5/p^2+5p+6}}}

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book Other Question

Hello to all!

Could someone kindly explain to me clearly, how to find the Vertex and intercepts of:

y = -2x^2 + 8x.

The book's answers are: Vertex(2,8):, intercepts are: find 3 consecutive odd intergers so that 30 more than the first number is 31 less than twice the middle number