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Sub in f(x)=53 into equation. So you have 53=2x^2+3, deduct 3 from both sides to get 50=2x^2 and then divide each side by 2 to get 25=x^2 and finally square root both sides to get x=5 or x=-5.

Start by outlining the type of environment in which energy companies operate in the UK. 1. The market structure is an oligoly. Each firm has a certain amount of market power it is able to exploit. Collusi...

The tertiary structure of a protein is the final folding of a protein into its final shape. It involves interactions between the R-groups of the amino-acids in the polypeptide chain. These interactions ar...

(1) Point: Less global trade

Example: US had a trade deficit of $460bn in 2017 meaning more imports than exports, leads to protectionism (such as 35% tariff on Chinese tyres in 2010).

Analys...

3y-18x+9=0 , 3y=18x-9 , y=6x-3 , Both lines have the same value for m which means they both have the same gradient and are therefore parallel.