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Expand and simplify (5x – 2y)(3x – 4y)

In this question, we are asked to 'expand' out the brackets. What this means is we need each term in one set of brackets (5x and -2...

The moment of a force about any point is defined as the force x perpendicular distance from the line of action of the force to the point - moment = F x d the unit is Nm.
Principle of moments states t...

Scalars have a magnitude (size) only. Vectors have both magnitude and direction.

Let's use an example.

x+y=6

2x+3y=14

Find the values of x and y.

When I was kid back then, I was always wondering why are equations important? We...

The Pythagoras Theorem equation is:

a² + b² = c²

^{It is used to calculate an unknown side of a right angled triangle. a, b and c represe...}