Algebra
2006-06-18 09:43:03 · 6 answers · asked by cecmor37 1 in Science & Mathematics ➔ Mathematics
3x^2 - 9x + 6 - 3(x - 1)(x - 2)
3x^2 - 9x + 6 - 3(x^2 - 2x - x + 2)
3x^2 - 9x + 6 - 3(x^2 - 3x + 2)
3x^2 - 9x + 6 - 3x^2 + 9x - 6
Everything gets cancelled out, so it doesn't matter if i put 10 in for x or not.
3(10)^2 - 9(10) + 6
3(100) - 90 + 6
300 - 90 + 6
210 + 6
216
2006-06-18 13:34:23 · answer #1 · answered by Sherman81 6 · 1⤊ 0⤋
3(100) - 9(10) + 6 - 3(10-1)(10-2)
= 300 - 90 + 6 - 3(9)(8)
= 216 - 216
= 0
No matter what you plug in for x this will always equal zero.
3x² -9x +6 -3(x-1)(x-2)
= 3x² -9x +6 - 3(x² - 3x + 2)
= 3x² -9x +6 - 3x² +9x -6
= 0
2006-06-18 17:00:32 · answer #2 · answered by MsMath 7 · 0⤊ 0⤋
3 x² - 9x + 6 -3 (x-1)(x-2)when x=10.?
3(10)(10) -9(10)+6-3(10-1)(10-2)
300 - 90 + 6 - 3( 9 )( 8 )
300 - 90 + 6 - 3(72)
210 + 6 - 216
216 - 216
= 0
2006-06-18 17:32:09 · answer #3 · answered by i want to talk 2 · 0⤊ 0⤋
=0
2006-06-18 18:25:36 · answer #4 · answered by mramahmedmram 3 · 0⤊ 0⤋
= 3(10)^2 - 9(10) + 6 - 3(10 - 1)(10 - 2)
= 3(100) - 90 + 6 - 3(9)(8)
= 300 - 90 + 6 - 216
= 216 - 216
= 0
2006-06-18 20:46:32 · answer #5 · answered by jimbob 6 · 0⤊ 0⤋
(3 * 100) - (9 * 10) + 6 - (3 * 9 * 8) = 0
2006-06-18 17:25:08 · answer #6 · answered by Anonymous · 0⤊ 0⤋