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As I’m sure you already know, the units of concentration are mol dm-3. So before we calculate concentrations we must convert the volu...
We need to find numbers that multiply together to give -15. This could be -1 and 15, 1 and -15, -3 and 5, 3 and -5. The numbers we need must add up to -2 as well (from -2x term). Therefore our set must be...
(x-4x3) = x(1-4x2) Just taking a factor of x out of both terms Within the inner bracket we have a difference of two squares. 12=1 and (2x)2=4x2 ther...
x=((y+2)/3)^1/2
First we will need to factorise the equation.
Start with the 3x^2 term and notice 3 is prime so must have 3x and x terms.
(3x - 9) (x + 1) or (3x + 3) (x - 3)
Setting the brackets to...
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