Help please

So i'm an idiot, i left my homework till last minute. I'm stuck on how to factorise these expressions. Here's what i've got so far for 3i, am i on the right tracks?



(X+4)^2-(x-3)^2

Difference of 2 squares

Yeahh ofc i'm such an idiot lol thanks. So is my working out wrong? :/

Yeahh ofc i'm such an idiot lol thanks. So is my working out wrong? :/

It's not wrong, but it isn't what you're supposed to do, I don't think. You should use the formula for the difference of two squares, not just FOIL it all out.

What's the formula? I'm still confused sorry

So i'm an idiot, i left my homework till last minute. I'm stuck on how to factorise these expressions. Here's what i've got so far for 3i, am i on the right tracks?



(X+4)^2-(x-3)^2

(X^2+8x+16) - (x^2-6x+9)

(X^2+4x+4x+16) - (x^2-3x-3x+9)

So i'm an idiot, i left my homework till last minute. I'm stuck on how to factorise these expressions. Here's what i've got so far for 3i, am i on the right tracks?



(X+4)^2-(x-3)^2

X^2+8x+16 - x^2-6x+9

X^2+4x+4x+16 - x^2-3x-3x+9

X(x+8)+16 - x(x-6)+9

Thanks

For example:

Okay. So in the question i was attempting, its (x+16)^2 - (x+9)^2?

(blah)^2 - (something)^2 = (blah + something)(blah - something)

Ok but then how do i factorise it?

Sorry?

That is how you factorise it - what else would you need to do?

Ok,thank you for your help

(blah)^2 - (something)^2 = (blah + something)(blah - something)

Nice use of colour.