Which do I do first?? Help :)

[last timber]

none of that

it's not an equation you can't just multiply it with -36

what number gives you 25 when you square it

do the same for 36

boom now you have the opportunity to put brackets around and square the bracket.

then you have a difference of squares and can factorise it with 3.binomial

[frail sparrow]

ok ty

[last timber]

Did it work?

[dreamy belfry]

Do you know the identity
$x^2-y^2 = (x+y)(x-y)$

[true phoenix]

Daddy_314

[dreamy belfry]

What happens if I tell you that

$25a^2 - 36(b-a)^2
= (5a)^2 - (6(b-a))^2$

[true phoenix]

Daddy_314

[last timber]

please don't just post solutions in here

[dreamy belfry]

This is not a solution

But an explicit hint

[last timber]

well if you think so, I'd say this is way too much, but whatever

[dreamy belfry]

No one is going to post such a question if they could come up with this step themselves

There's a fine balance between giving a vague hint and spoiling the exercise

[last timber]

Yes. And to me it was spoiling the exercise.

But do as you wish.

[dreamy belfry]

Well it's not you who's struggling with the exercise

[frail sparrow]

it worked

thank you 🙂

also, sorry if my question had commited drama amongst you both

[stone pine]

close if done pls