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y = 2x+5

y=x+1

First equate:       2x+5=x+1

Rearrage for x:    2x-x=1-5

Which gives:       x=-4

Okay so to work out the surface area of any 3D shape, you should look at the area of every surface on the shape individually. I would then draw a cylinder. First, we can work out the area of this...

1. Factorise the top and bottom {x^2 -3x -4}/{x^2 + 4x +3}=(x+1)(x-4)/(x+1)(x+3)                                                                                                  2) Cancel the common te...

I would make sure the student new the difference between simple and compound interest to begin with. I would then explain the formula for compound interest and how it works normally. The formula is p(1+m)...

We need to get the quadratic expression into the form (x + a)(x + b). If we expand this expression using FOIL, we see that the resulting expression is x² + (a+b)x + ab. We can now find a and b ...