Top answers

How do you rationalise the denominator?

If a denominator is has just one square root (i.e 1/(3)^0.5). Then, since it is a fraction you can multiply top and bottom by the same number and maintain the value of the fraction. Hence we multiply top and...
NA
Answered by Natasha A. • Maths tutor
4736 Views

Solve this question

2X2 = 4
MK
Answered by Maria K. • Maths tutor
4286 Views

How can i add algebraic fractions, such as 1/(1-x) + 2/x

The trick to working out how to do this, is to remember how to add normal fractions! We know 1/8 + 3/8 = 4/8 . The point here is that IF THE DENOMINATORS ARE THE SAME, we can add the numerators. So what abou...
MW
Answered by Matthew W. • Maths tutor
4918 Views

Expand and simplify the following equation: 6(x-3) - 4(x-5) = 0

Start off by dealing with the brackets by expanding. The brackets around a part of the equation imply that the entire content of the brackets will be affected by the factor outside of the brackets, in this c...
SH
Answered by Sophia H. • Maths tutor
11705 Views

Factorise fully 6x^2-14x

Since there is only two terms it is a case of seeing what both terms have in common. Both share a 2 and an x so having this an the coefficient to the bracket gives 2x(x-7)
MO
Answered by Max O. • Maths tutor
8015 Views