Question

Please help me to understand my mistake, so that i dont make again.

Answer 1

well open the brackets add the x terms and constants you will see that the option u marked works out to 2x-13

Answer 2

try to do the same with each option u can easily find the odd one out

Answer 3

be careful with the signs though ! good luck :)

Answer 4

Thank you so much for helping, i m such as dumb, i know. :) thanks alot

Answer 5

you are welcome :) ..no u r nt dumb ...practise will make u perfect :)

Answer 6

is it first one?

Answer 7

yep :)

Answer 8

but how do you find that because, i still didnt get how to find it

Answer 9

The process is still blurry to me

Answer 10

i just added the terms with x and checked
5x+x-9x
=6x-9x
=-3x not equal to 2x

Answer 11

Thank you so so much ! your truly amazing :) thnkies