exam
Maths Puzzle
Numerical Ability
48. Vinegar has a hydronium-ion concentration of about 3.97 x 10^-3 mole per liter. Determine the pH of vinegar and state whether it is an acid or a base.
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exam Other Question
Reduce the given expression to lowest terms.
3x2+7x+2
--------
4x2-16
I need to verify ( ( x+2) (x-1) (2x-7)) these factos to see if they are corret either through long division or synthetic division.