Want help before the GCSE on Monday

[ExamSolutions]

If you have got a question you can't do, tell us!

Just type it in and we will aim to answer your question reasonably promptly.

We can't tell you what's on the paper though. Sorry!!!

[SusanS]

Help. Doing some last minute revision.

Mind has gone blank. How do you write x+8x-5 in the form (x+a)+b ?

Thanx.

[ExamSolutions]

for x+8x-5
half the number in front of the term in x. ie 8 becomes 4
write (x+4)

when you expand (x+4) you get x+8x+16

You do not need the 16 but require -5 so -21 from the 16

so x + 8x - 5 = (x+4)-21

Hope that helps.

Good luck today!

[SusanS]

Thank you. I now get it. Panic over.