Solve for x. One of the answers is _?_
6x^2-17x-14=0
Easy Algebra 2 Question Please Help?
2008-03-21 5:08 pm
回答 (11)
2008-03-21 5:14 pm
✔ 最佳答案
if it is an easy question why do you need help?(2x-7)(3x+2)=0
2x-7=0
2x=7
x=3 1/2
3x+2=0
3x=-2
x= -2/3
2008-03-22 12:40 am
6x^2 - 17x - 14 = 0
(2x - 7)(3x + 2) = 0
2x - 7 = 0
2x = 7
x = 7/2
x = 3 1/2 (3.5)
3x + 2 = 0
3x = -2
x = -2/3
â´ x = 3 1/2 (3.5) , -2/3
(2x - 7)(3x + 2) = 0
2x - 7 = 0
2x = 7
x = 7/2
x = 3 1/2 (3.5)
3x + 2 = 0
3x = -2
x = -2/3
â´ x = 3 1/2 (3.5) , -2/3
2008-03-22 12:16 am
First, you need to factor the trinomial.
Mulitply -14 x 6 = -84
Now think of 2 integers when multiplied give you -84 and when added give you -17.
That would be -21 and 4.
Now split your middle terms into -21 and 4.
6x^2 +4x -21x -14
Now factor by grouping the first 2 and the last 2 terms.
2x(3x+2)-7(3x+2)=0
(2x-7)(3x+2) = 0
Now set each set of parentheses = to 0.
2x-7=0
2x=7
x=3.5
3x+2=0
3x=-2
x=-2/3
Mulitply -14 x 6 = -84
Now think of 2 integers when multiplied give you -84 and when added give you -17.
That would be -21 and 4.
Now split your middle terms into -21 and 4.
6x^2 +4x -21x -14
Now factor by grouping the first 2 and the last 2 terms.
2x(3x+2)-7(3x+2)=0
(2x-7)(3x+2) = 0
Now set each set of parentheses = to 0.
2x-7=0
2x=7
x=3.5
3x+2=0
3x=-2
x=-2/3
2008-03-22 12:14 am
The equation has factors
(3x + 2)*(2x - 7) = 0
Therefore either or both of the factors must be zero
3x + 2 = 0; x = -2/3
2x - 7 = 0; x = 3.5
(3x + 2)*(2x - 7) = 0
Therefore either or both of the factors must be zero
3x + 2 = 0; x = -2/3
2x - 7 = 0; x = 3.5
2008-03-22 12:14 am
(2x-7)(3x+2)
X = 7/2 or -2/3
X = 7/2 or -2/3
2008-03-22 12:13 am
3.5
the other is -2/3
You have to factor or use the quadratic formula.
the other is -2/3
You have to factor or use the quadratic formula.
2008-03-22 12:13 am
x= -2/3
x=7/2
x=7/2
2008-03-22 12:13 am
(2x-7 ) (3x+2)
3.5, -2/3
3.5, -2/3
2008-03-22 12:12 am
(3x + 2)(2x - 7)=0
x = -2/3 or 7/2
x = -2/3 or 7/2
2008-03-22 12:12 am
x= 7/2 & x= -2/3
收錄日期: 2021-05-01 10:16:24
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