How would you factorise x^2 + 4x + 4
This is in the form ax2 + bx + cWhere, a= 1b=4c=4To factor we have to find two numbers that:Add up to b, in this case 4Multiply together to give c, in this case also 4So we deduce that the two numbers are +4 and +4 as;2 + 2 = 4, b2 x 2 = 4, c Therefore the factorised form is:(x+2)(x+2)As both the brackets are the same We can express this as (x+2)2
TB
Related Maths GCSE answers
All answers ▸When using trigonometry to calculate side lengths/angles, how do you know which identity to use?
How to factorise quadratic equations?
A cuboid has dimensions: width = x+1, length = 2x-2, height = x+2. Work out the volume of this cuboid. Give your answer in terms of x.
A bag contains 10 apples. Three of the apples are green and seven of the apples are red. If an apple is pulled from the bag at random, what is the probability that the apple will be green?