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any odd number can be written as (2n+1), where n is any integer (whole number). Squaring any odd number is therefore= (2n+1)² . expanding the brackets gives =4n²+2n+2n+1² ...

On a straight line graph, the lines are formed by an equation in the form y=mx + c. The m value in this equation represents the gradient, and the c value is the y-intersect.If t...

Part a) requires you to find df/dx for the given function. To do this, we differentiate the function once, which is done by multiplying the power of each 'part' with the part itself and subtracting 1 from...

x = 5

To expand this we multiply the first term in each bracket together to get x² Then we do the first bracket's first term by the second bracket's second term to get -5x The we do the first bracke...