(a - 1)^2 <span title="?..............................?">?...........................</span>

Question

(a - 1)^2 ?...........................

Answer 1

Use FOIL method to multiply

(a - 1)^2 means

(a - 1 ) ( a - 1 )

a^2 - a - a + 1

a^2 - 2a + 1  

Good luck to you !

Answer 2

Write it out as

(a-1)(a-1)

Then FOIL:

= a^2 - 1a - 1a + 1 = a^2 - 2a + 1

Answer 3

a^2-2a+1