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When rearranging an equation, the most important thing to remember is that whatever you do to one side of the equation you must do to the other. In order to make y the subject you want to isolate it so t...

=(x-5)(x+5)

So when you're solving a composite function you carry out the function closest to the 'x' first. It is useful to think of a composite function as the function of a function. Let me demonstrate with an exa...

64^-1/3= 1/64^1/3= 1/4

Step 1 - half the "x" coefficient = +5 Therefore p = +5 and place in brackets (x+5)²Step 2 - square the value of p and subtract 5*2 = 25 (x+5)² - 25Step 3 - add the numbe...