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What is an inverse function?

An inverse function essentially gives us the opposite output for the same input of a function and cab be graphically represented as a reflection on the y=x axis.To find algebraically the inverse of a functio...
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Answered by Leo S. • Maths tutor
4226 Views

Solve x^2 - 5x -14 = 0

x^2 - 5x -14 = 0Factorise to give (x-7)(x+2)=0therefore x-7 = 0 OR x+2 = 0 so x = 7 or x = -2
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Answered by Helen B. • Maths tutor
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Write 4x^2+18x+2 in form a(x+m)+n.

First thing I like to do with questions like these is to check if I can simplify the expression given, and we can simplify this expression. So 4x^2+18x+2 can be simplified to 2x^2+9+1. The next step for me i...
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Answered by bisola a. • Maths tutor
3716 Views

Solve 2x^2 + 7x + 6 = 0

2x^2 + 7x + 6 = 0 (2x + 3)(x + 2) = 0 2x +3 = 0 -> 2x = -3 -> x = -3/2 x + 2 = 0 -> x = -2 x = -3/2x = -2
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Answered by Ben S. • Maths tutor
3776 Views

Work out the values of x and y using the equations 2x + 3y = 18 and x + y = 6

First, we need to identify what type of question this is. Since there are two equations with two unknown values, we can conclude this is a simultaneous equation problem. The fastest way to solve the question...
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Answered by Rebecca H. • Maths tutor
6509 Views