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Maths
GCSE

How do I solve 3x + y = 11 & 2x + y = 8?

In order to solve this set of simultaneous equations, we will rearrange each equation to use substitution. The aim of this problem is to find out what the value of x and y is. Let's rearrange equation ...

Answered by Naomi O. Maths tutor
13441 Views

How can I factorise a quadratic equation?

A quadratic equation is an equation of the form y = ax2 + bx + c where a, b and c are constants (for example 5, -2 or 0). To "solve&qu...

Answered by Tom R. Maths tutor
2557 Views

Work out the value of (√12 + √3) squared. Assume square roots are positive.

(√12 + √3) squared is just (√12 + √3) mulitipled by itself, so we can rewrite this as

(√12 + √3)*(√12 + √3)

Now we expandthe brackets.

We can mulitply out the ...

Answered by Lauren M. Maths tutor
32589 Views

How do i solve the quadratic x^2 + 5x + 6 = 0 ?

So we can always substitute the right terms into the quadratic formula. However, there might be a quicker way. Lets try and see if the quicker ways work.Firstly, we need to spot weather the difference of ...

Answered by Tarun S. Maths tutor
9709 Views

How can i solve the following simultaneous equations? 5x + y = 4 and 3x + 2y = 5?

The general approach to solving simultaneous equations is to replace the ‘y’s in one equation with ‘x’s, or the ‘x’s with ‘y’s.

In this case, we can first take the equation 5x + y = 4 and rear...

Answered by Tarun S. Maths tutor
10644 Views

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