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Why maths?

Maths has always been a passion of mine from a young age. I've always enjoyed helping others with their maths as I find it extremely stimulating.
LC
Answered by Lauren C. Maths tutor
5036 Views

How do you solve the simultaneous equations 3x + 4y = 5 and 2x – 3y = 9

We label each equation 3x + 4y = 5 (1) 2x – 3y = 9 (2) We now want to get rid of one of the variables (x or y). Lets get rid of x: We need (1) and (2) to have the same number of x's so we multiple (1) by 2 a...
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Answered by Sahiti S. Maths tutor
41769 Views

How do you find the nth term formula for a sequence with non-constant difference?

Take the sequence; 9, 12, 19, 30, ... (1) The first step is always to look at difference between the terms; 9, 12, 19, 30, ... +3, +7, +11, ... +4, +4, ... We can see the difference is not constant, (2) so w...
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Answered by Richard S. Maths tutor
211793 Views

When I multiple two negative numbers together is my answer positive or negative?

My favourite way to remember whether my answer is positive or negative when I multiply two numbers is to think of the following: a) If you multiply two numbers with the SAME sign (i.e. two positive numbers o...
HS
Answered by Hannah S. Maths tutor
5274 Views

Expand and simplify the following; (2 + 3^0.5)^2 - (2 - 3^0.5)^2

(2 + 3^0.5 )^2 - (2 - 3^0.5 )^2 Firstly we will start by seperating the 2 brackets. This will give us 1 : (2+ 3^0.5 )^2 2 : (2 - 3^0.5 )^2 We will start by expanding our brackets. To do this we use the rule;...
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Answered by Mickey N. Maths tutor
10750 Views