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By completing the square, since this makes you see that the square will always be >= 0 and the other part allows you to calculate the minima or maxima depending on the sign in front of x². E...

We can work the remainder by using division, and one of the most common methods to use is long division. (Here I would present the method on a whiteboard)

As we can see, the closest multiple of 8 t...

It is crucial to know that three thirds make up 1.

If there are 9 lots of 1, then we would need 9 times the amount of thirds that make up 1.

Therefore, there are (9 x 3) thirds in 9, which e...

We must identify the like terms and combine them:

4x + 5y + 6x - 7y

4x + 6x = 10x

5y - 7y = -2y

Therefore, the simplified ex...

When it comes to equations that have more than one symbol, you must always follow BODMAS: Brackets, Order, Division, Multiplication, Addition, Subtraction.

The equation we have is 2 + 8 x 3, using ...