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3x+6=(x+2)(x-4)
3x+6 = x2-2x-8
x2-5x-14=0
(x-7)(x+2)=0
x=7 so y=27
and x=-2 so y=0
This exercise is asking to prove the existance of the square root of 2. So let's consider the function f(x) = x^2. Since f(x) is a polynomial, then it is continuous on the interval (- infinity, + infin...
A simple way to do this is to use substitution. You can pick values for x such as x=0,1,2 and find the values for y. When you have two or more coordinates you can plot the line.
In this c...
This is simple as long as you remember FOIL: First
Outside
Inside
Last
So, for example, let's multiply out (2x+1)(4x-3)
Multi...
The way to find the length of one side of a triangle can be to use SOHCAHTOA, an abbreviation learnt to help rememeber the process. SOH stands for sin = opposite / hypotenuse , CAH stands for cos = adj...
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