factoristion

[gilded comet]

iii is différence of two squares

ii think about how many lots of (k+g) you gave

Have

[stark iris]

but first you have to factor it out and factorise it ,but i am confused how you factor it out

[gilded comet]

Try replacing it with y

Then it might look simpler

After you’ve factorised put it back in

[stark iris]

you mean k

i still dont understand it

[gilded comet]

Substitute (k+g) for y

15y^2-20y

Then factorise

Then sub k+g back

[stark iris]

and what you do for iii

[gilded comet]

Difference of two squares

[stark iris]

t