Factorise x^2 +6x + 8
Firstly list two numbers that add to 6 and right them down e.g. 4 and 2.Secondly list two numbers that multiply to form 8 e.g. 8 and 1 or 4 and 2.The numbers that appear in both solutions will therefore be the answer.We can then do the expansion of the factors (x+4)(x+2) for completeness we can then see that the answer expands to x2+2x + 4x +8 which can then be simplified to x2+ 6x + 8
EM
Related Maths GCSE answers
All answers ▸A t-shirt is in the sale section of a store. It has 20% off and the new sale price is £12. What was the original price of the t-shirt?
Expand and simplify the following expression: x(5x – 2) – 3(x2 – 2x + 7)
Work out the value of 2a^2 + b^3 when a = 5 and b = –3
Show me why the product of a squared and a cubed is a to the power of 5.