-5x + 4(2x - 2) = 1
I got -13=-7
Sorry but how do solve this? -5x + 4(2x - 2) = 1?
2009-10-02 5:19 pm
回答 (11)
2009-10-02 5:26 pm
✔ 最佳答案
distribute 4 to the values in the parenthesis:-5x +4(2x) +4(-2) = 1
-5x + 8x -8 = 1
3x - 8 = 1 ----> combine same terms, that is, transfer 8 to the right
3x = 1+8
3x = 9 ----> transfer 3 to the right
x = 9/3
x= 3 ----> final answer.
2009-10-02 7:13 pm
- 5x + 8x - 8 = 1
3x = 9
x = 3
3x = 9
x = 3
2016-12-17 6:22 pm
1st, you are able to not grant 15 pts... 2nd suggestions... 4x^2 -sixteen = 0 4x^2 = sixteen x^2 = 4 x = 4, -4 2x^2 = sixteen x^2 = 8 x = -2sqrt (2), 2 sqrt(2) x^2 +5 = 0 x^2 = -5 this does not have a genuine answer, in case you necessary an imaginary answer that's: i sqrt(5) or -i sqrt(5) x^2 +5x -6 = 0 (x+6) (x-a million) = 0 x = -6,a million x^2 -25 = 0 x^2 = 25 x = -5,5 3x^2 = -9x x^2 = -3x x^2 +3x = 0 x(x+3) = 0 x= 0, -3 2x^2 -4x + a million = 0 [4 +/- sqrt(sixteen - 8) ]/4 a million+/- a million/4sqrt(8) a million +/- a million/2sqrt(2) =x 3x^2 + 2x =7 3x^2 + 2x -7 = 0 [-2 +/- sqrt ( 4 + 80 4)] /6 [ -2 +/- sqrt (88)] /6 [-2 +/- 2sqrt (22)] /6 [-a million +/- sqrt (22)] /3 =x x^2 +8x +9 = -7 x^2 + 8x + sixteen = 0 (x+4)^2 = 0 x= -4
2016-12-11 10:24 pm
1st, you would be able to't furnish 15 pts... 2nd recommendations... 4x^2 -sixteen = 0 4x^2 = sixteen x^2 = 4 x = 4, -4 2x^2 = sixteen x^2 = 8 x = -2sqrt (2), 2 sqrt(2) x^2 +5 = 0 x^2 = -5 this would not have a actual answer, in case you needed an imaginary answer it is: i sqrt(5) or -i sqrt(5) x^2 +5x -6 = 0 (x+6) (x-a million) = 0 x = -6,a million x^2 -25 = 0 x^2 = 25 x = -5,5 3x^2 = -9x x^2 = -3x x^2 +3x = 0 x(x+3) = 0 x= 0, -3 2x^2 -4x + a million = 0 [4 +/- sqrt(sixteen - 8) ]/4 a million+/- a million/4sqrt(8) a million +/- a million/2sqrt(2) =x 3x^2 + 2x =7 3x^2 + 2x -7 = 0 [-2 +/- sqrt ( 4 + 80 4)] /6 [ -2 +/- sqrt (88)] /6 [-2 +/- 2sqrt (22)] /6 [-a million +/- sqrt (22)] /3 =x x^2 +8x +9 = -7 x^2 + 8x + sixteen = 0 (x+4)^2 = 0 x= -4
2009-10-02 5:27 pm
-5x + 4(2x – 2)= 1
-5x + 8x - 8 = 1
3x -8 = 1
3x= 9
3x/3=9/3
x=3
LOL!!
;)
-5x + 8x - 8 = 1
3x -8 = 1
3x= 9
3x/3=9/3
x=3
LOL!!
;)
2009-10-02 5:27 pm
-5x+8x-8=1
3x=8+1
3x=9
x=9/3=3
3x=8+1
3x=9
x=9/3=3
2009-10-02 5:27 pm
First get rid of the -10x + 2 = 1 or - 10x = -1 or 10x = 1 or x = 1/10
2009-10-02 5:25 pm
-5x + 4(2x - 2) = 1
-5x + 4(2x) - 4(2) = 1
-5x + 8x - 8 = 1
3x = 1 + 8
x = 9/3
x = 3
-5x + 4(2x) - 4(2) = 1
-5x + 8x - 8 = 1
3x = 1 + 8
x = 9/3
x = 3
2009-10-02 5:24 pm
-5x + 4(2x - 2) = 1
-5x+8x-8=1
3x-8=1
3x=8+1
3x=9
x=9/3
x=3
-5x+8x-8=1
3x-8=1
3x=8+1
3x=9
x=9/3
x=3
2009-10-02 5:23 pm
Sorry, that didn't print the first time for some reason.
Anyway, the solution is:
-5x + 4(2x - 2) = 1
Distribute the 4 to get
-5x + 8x - 8 = 1
Combine like terms
3x - 8 = 1
Add 8 to both sides
3x = 9
Divide by 3
x = 3
Have a good day!
Anyway, the solution is:
-5x + 4(2x - 2) = 1
Distribute the 4 to get
-5x + 8x - 8 = 1
Combine like terms
3x - 8 = 1
Add 8 to both sides
3x = 9
Divide by 3
x = 3
Have a good day!
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