My maths teacher back in school did not mention about using factor trees for the variable next to the algebraic value, hence I struggled. But you giving me this idea made my life so much easier, I really hope I get a solid grade when I do the higher re sit GCSE maths in 2024 summer.
For the answers where one is positive and one is negative, are they interchangeable with their positive/negative counter parts? For example if the answer was -2 and 10 would -10 and 2 still be a viable answer?
At 11:21 the third example in that part, I was expecting there to be only one bracket for c^2 - 36=0 .... just rewatched - now I get it - it's two squares, one of them being 36! Phew.
For the equation 3) g^2 - 8g - 20 =0 how do I know which of the factors is negative and which is positive? Would I have to try it out by substitution? Or is there a way to know?
@@donkeydonkey1852 For the equation 3) g^2 - 8g - 20 =0 how do I know which of the factors is negative and which is positive? Would I have to try it out by substitution? Or is there a way to know?
