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1a) Simplify 2a^3 x a^5 1b) (4x^2)^3 1c) 2(3y+1) - 3(y-4)

1a) To simplify this into one expression you first multiply together the co-efficients, therefore 2a x a = 2a. Then for indices when they are multiplied together you add them, so the simplification would be ...
FI
Answered by Freddie I. • Maths tutor
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What is a parliamentary select committee?

A select committee is composed of a number of MPs from across the parties in Parliament, represented in proportion to how many seats they have. They typically question witnesses (often properly grilling them...
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Given the function f(x) = 2x^2 + 3.When f(x) = 53 find both values of x

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.
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Answered by Jack W. • Maths tutor
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Explain how the energy companies have exploited their market power.

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. Collusion ...
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Answered by Samuel H. • Economics tutor
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What is the tertiary structure of a protein?

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 are m...
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Answered by Shiv S. • Biology tutor
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