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We need to factorise this equation to solve it.
The first step for factorisation is to make the equation equal to zero. We can do this by subtracting x from both sides to get:
...
The first step to eliminate one of the unknowns, in this case x or y. This can be done by making the coefficient (the number before) of one of the unkowns the same number...
x³-x=x(x²-1)=x(x+1)(x-1)
Equation 1: 2x + y = 14 Equation 2: 4x - y = 10
Add the two equations together to get 6x = 24. Therefore x = 4.
Then substitute the value x = 4 into equation 1 and solve. ...
Let us use Line 1 and Line 2 as an example.
Line 1: y = 2x + 3
Line 2: y = -0.5x + 7
Step 1 - Try and plot the two functions on a x, y coordinate axes.
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