Question

simplify (q-1)^2

Answer 1

hint :
(a-b)^2 = a^2 - 2ab + b^2

Answer 2

Still confused

Answer 3

use the formula above, in this case a=q and b=1
so,
(q-1)^2 = q^2 - 2(q)(1) + 1^2 = ....

Answer 4

now, u can simplify it is ...

Answer 5

Is it almost like a FOIL? Im still a little confused about my answer but I understand what you're saying.

Answer 6

which part make u confused, just simplify parts :
2(q)(1) = 2q
and 1^2 = 1 * 1 = 1

Answer 7

Oh I have it now thank you