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First write down all the factor pairs of 12 (1,12) (-1,-12) (3,4) (-3,-4) (6,2) (-6,-2).

From these factors, find a pair that, when added together, is equal to -7.

In this case the correct p...

So to begin we need factors of 12.

12 and 1, 3 and 4.

Then we need to think of a way of adding or subtracting to give -1.

So we can have 4 and -3.

which gives (x+4)(x-3).

First off we can refer to the equations as equation 1 and equation 2. In order to solve the equations we must find a way to combine them that elimates one of the variables ( X or y) so that the other can ...

Here you have 2 equations and you need to find the value of x and of y. First we are going to find the value of x. We do this by eliminating the y factor by multiplying and adding the equations. If we mul...

We can express sqrt(20) as sqrt (4 x 5). This is equivalent to sqrt(4) x sqrt(5). We know that sqrt(4) = 2. This sqrt(20) can be written as 2sqrt(5).