Question

(x-10)^2

Answer 1

Do you know\[\large (a-b)^2=a^2-2ab+b^2\]

Answer 2

No i don't

Answer 3

FOIL it out. (x-10)(x-10)

Answer 4

\[(x-10)^2\ \text{is of the form} \ (a-b)^2 \]
where a is x & b is 10

Answer 5

yes i know how to do that but, i got 100x^2+49y^2
but on my answer key it said it was wrong.

Answer 6

x*x=?
x * -10 = ?
x * -10 = ?
-10 * -10 = ?

Answer 7

you can use this method too