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To find the roots, we solve the equation 3 x 2 + 13x + 4 = 0. We could try factorising the equation, which gives us (3x + 1)(x + 4) = 0 So the roots are x = -1/3 and x = -4. Alternatively, we could use the q...

Destructive plate margins are where a plate of higher density is subducted, or forced underneath, another, less dense plate. This occurs due to convection currents in the mantle. These are caused by radioact...

Igneous rocks Igneous rocks are distinguishable by the fact that they are made up of crystals, which vary in size depending on where the rock was fomed. Intrusive rocks consist of larger crystals - formed in...

There are three ways of turning a statement into a question in French. They are all equally good, but are perhaps used in slightly different situations, as I will explain. The first (and easiest) way is simp...

Reverse Polish Notation (or RPN) is simply a different mathematical way of laying out equations, take for example the expression: 7+ 9 The layout is <First number> <Operator> <Second Number&gt...