exam Maths Puzzle Numerical Ability

1. Find the product of (x^2 - 3x + 5) with the quotient of (18x^6 - 27x^5 - 9x^3) � 9x3.

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exam Other Question

A pharmacist is adked to give a customer 4.5 milliters of an antibiotic over a period of 36 hrs. If the antibiotic is to be given every 4 hrs starting immediately, how much antibiotic should be given in each dose. I need help with a couple equation I need to solve concerning logarithms:

1) {{{2ln(x+3)-ln(x+1)=3^ln2}}}

2) {{{2^(5x+3)=3^(2x+1)}}}