I need the answer, should come out in brackets. Help please!!
2007-11-22 20:19:31 · 9 answers · asked by Info team 2 in Science & Mathematics ➔ Mathematics
3x^2-7x-6=3x^2-9x+2x-6
=3x(x-3)+2(x-3)
=(3x+2)(x-3)
2007-11-22 20:24:11 · answer #1 · answered by kami 5 · 0⤊ 0⤋
a million). x^2 - 7x + 6 = 0 (x - a million) (x + 6) = 0 x = a million and x = 6 2). 3x^2 + x - 2 = 0 (3x - 2) (x + a million) = 0 x = 2/3 and x = -a million 3). x^2 - 9x - 36 = 0 (x - 12) (x + 3) = 0 x = 12 and x = -3 4). 3x^2 + 7x - 6 = 0 (3x - 2) (x + 3) = 0 x = 2/3 and x = -3 ok....
2016-10-17 21:23:52 · answer #2 · answered by ? 4 · 0⤊ 0⤋
3x^2 - 7x - 6=0
3x^2 - 9x + 2x - 6 = 0
3x(x - 3) + 2(x - 3) = 0
(3x + 2)(x - 3) = 0
either 3x + 2 = 0 or x-3 = 0
x= -2/3 or x=3
2007-11-22 21:21:29 · answer #3 · answered by twinkle 2 · 0⤊ 0⤋
Question should read "Factorise the following expression" :-
3x² - 7x - 6
(3x + 2)(x - 3)
Check
3x² - 9x + 2x - 6
3x² - 7x - 6 (as required)
2007-11-22 21:12:11 · answer #4 · answered by Como 7 · 0⤊ 1⤋
3x^2-7x-6= 3x^2-9x+2x-6 = 3x(x-3)+2(x-3) = (3x+2)(x-3)
therefore x=3 or x= -2/3
2007-11-22 20:31:08 · answer #5 · answered by icygold311 2 · 0⤊ 0⤋
Answer is (x-3)(3x+2)
2007-11-22 20:29:03 · answer #6 · answered by Mavrick 1 · 0⤊ 0⤋
3x^2 -7x - 6
3x^2 -9x+2x -6
3x(x-3) + 2(x-3)
(x-3) (3x+3)
2007-11-22 20:26:48 · answer #7 · answered by sunanda_gudu 2 · 0⤊ 0⤋
using quadratic formula;
x=(7+{7^2+[4x3x6]}^0.5)/6
=(7+11)/6
=3
OR
X=(7-{[7^2+[4X3X6]}^0.5)/6
=(7-11)/6
=-2/3
2007-11-23 02:46:44 · answer #8 · answered by kamjinga 2 · 0⤊ 0⤋
(x-3)(3x+2)
2007-11-22 20:22:23 · answer #9 · answered by mbdwy 5 · 0⤊ 0⤋