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(7 + √3)(7 - √3) = 7² + 7√3 - 7√3 - (√3)² = 49 - 3 = 46Alternatively you can go straight to identifying that this is the difference between two squares, using the fact that (a + b)(a...

They're both similar but form between different types of elements. An ionic bond will form between a metal and a non-metal. The metal will donate electrons and the non-metal will accept the electrons, f...

It is strong and lightweight, and so can be taken apart and stored in a car boot etc. for transport. ABS has a glossy finish which means it requires not protection for indoor or outdoor use. It is a hard ...

y=3x+7 2y-6x=8
2y-6x=82y=8+6xy= 4+3xy=3x+4When both equations equal y they both have a 3 in front of their x meaning that they both have a gradient of 3.

Osmosis is the passive diffusion of water, which therefore, doesn't require any energy to occur. Typically water will move from an area of high concentration to an area of low concentration across a semi-...