2006-07-31 02:22:05 · 7 answers · asked by guru 1 in Science & Mathematics ➔ Other - Science
2x-1
ex
4^2-3^2=4+3=7
2006-07-31 02:41:07 · answer #1 · answered by Helper 1 · 13⤊ 3⤋
x^2 - [ x^2 - 2(x)(1) + (1)^2] =
x^2 - x^2 + 2x - 1 =
2x -1
2006-07-31 02:34:29 · answer #2 · answered by Anonymous · 0⤊ 0⤋
So simple.
x^2 -(x-1)^2 = x^2 -(x^2-2x+1)= x^2 -x2 +2x -1 = 2x - 1
2006-07-31 02:27:11 · answer #3 · answered by vahucel 6 · 0⤊ 0⤋
x ^ 2 - (x-1)^2 =
(x)(x) - (x-1)(x-1) =
(x)(x) - [(x)(x)+(-x)+(-x)+(1)] =
(x)(x) - [ (x)(x) - 2x + 1] =
(x)(x) - (x)(x) -2x +1 =
-2x + 1
i think
2006-07-31 02:30:33 · answer #4 · answered by notsureifimshy 3 · 0⤊ 0⤋
2x-1
2006-07-31 02:27:23 · answer #5 · answered by skahmad 4 · 0⤊ 0⤋
2x-1
2006-07-31 02:27:06 · answer #6 · answered by Richard B 4 · 0⤊ 0⤋
2x-1
2006-07-31 02:26:11 · answer #7 · answered by freemind 2 · 0⤊ 0⤋