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By putting the bracket around (11+2-1) you are able to calculate that this then equals 12. This can the be put into the equation 12-(11+2-1)=0 which is 12-(12)=0. This then means that 12-12=0 giving you t...

Firstly, we need to take a factor of 2x out of the equation. This is because both 2x² and 12x can be divided by 2x. This gives us (2x)(x)+(2x)(6). If we then collect the terms 2x, we get 2x(x+6...

The heart functions as a pump, circulating blood around the body to the cells. This is the medium for oxygen being delivered to the cells. The heart has two sides, left and right. Each one contains a vent...

Opportunity cost is defined as the next best alternative forgone. This is essentially, all the other alternatives that have to be given up when you make a choice. For example, the opportunity cost of goin...

The tangent to the curve is a straight line and will hence have the form f(x) = m * x + c, where m is the gradient of the tangent line and c is the y-intercept of the tangent line.
The gradient of th...