(x – 2)^2

2. Originally Posted by Elli
(x – 2)^2

$(x-2)^2 = (x-2)(x-2) = x^2-2x-2x+4 = x^2-4x+4$

make two brackets then foil.

3. Originally Posted by Elli
(x – 2)^2

hi
it is like (a-b)^2 ^-whole square
(a-b)^2=a^2-2ab+b^2 (^power2)
(x-2)^2=x^2-2*x*2+2^2
(x-2)^2=x^2-4x+4

ok

4. ## Unless specifically asked to do foil

I would learn to use saranya's method ASAP. Saves you a ton of time on tests and on future problems.

5. ## Thank you!

Thank you for your help .. euclid2, petergunz and saranya