Factorise 4x+6x^2
This is factorisation by common factor, so we need to write 4x+6x2 as a product. First we need to find the highest common factor of 4x and 6x2 so that we can take it out, which in this case is 2x, so we have 4x + 6x2 = 2x(+). Next we need to find out what we have to multiply 2x by in order to get 4x (it's 2) ,and again in order to get 6x2, (it's 3x). This is what we put into the spaces in the brackets, so we get 4x +6x2 = 2x(2+3x).Always multiply out the brackets again to check your answer. 2x(2+3x) = (2x x 2) + (2x x 3x) = 4x + 6x2
AM
Related Maths GCSE answers
All answers ▸Tom's dad is 3 times older than him. In 15 years the sum of Tom's and his dad's ages will be equal to 102. How old are Tom and his dad now?
A box contains 7 caramel doughnuts. They have masses of 56 g, 67 g, 45 g, 56 g, 58 g, 49 g and 50 g. Find the median, mean and mode values of these masses. Bonus: What mass of doughnut could be added to the box to make the mean mass = 61 g.
There are some people in a cinema. 3/5 of the people in the cinema are children. For the children in the cinema, number of girls:number of boys = 2:7. There are 170 girls in the cinema. Work out the number of adults in the cinema.
Solve x^2 - 2x - 15 = 0