3x^2+4x-15=0

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3x^2+4x-15=0

3x^2+4x-15=0 (x + 3) (3x - 5) = 0; x + 3 = 0; x = -3; 3x - 5 = 0; 3x = 5; x = 5/3; x = {-3, 5/3}

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Asked 10/1/2009 3:19:56 PM

Updated 8/30/2014 1:10:47 PM

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alfred123

3x^2+4x-15=0

(x + 3) (3x - 5) = 0;

x + 3 = 0;
x = -3;

3x - 5 = 0;
3x = 5;
x = 5/3;

x = {-3, 5/3}

Added 8/30/2014 1:10:47 PM

This answer has been confirmed as correct and helpful.

Confirmed by yumdrea [8/30/2014 1:15:40 PM]

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1-9/10x=8/5

Weegy: In that equation, x is equal to 6/5. (More)

Question

Expert Answered

Updated 8/30/2014 7:06:59 PM

2 Answers/Comments

adoptivemama

Math is fun!

Added 10/1/2009 8:09:13 PM

andrewpallarca

1-9/10x = 8/5;
-9/10x = 8/5 - 1;
-9/10x = 3/5;
x = (3/5)/(-9/10);
x = 30/-45;
x = -2/3

Added 8/30/2014 7:06:54 PM

This answer has been confirmed as correct and helpful.

6(x+5)=7[x-(3-x)]

(More)

Question

Updated 8/30/2014 6:50:46 PM

1 Answer/Comment

alfred123

6(x+5)= 7[x-(3-x)]

6x + 30 = 7(x - 3 + x)

6x + 30 = 7(2x -3);

6x + 30 = 14x -21;

30 + 21 = 14x - 6x;

51 = 8x;

x = 51/8

Added 8/30/2014 6:50:46 PM

This answer has been confirmed as correct and helpful.

Confirmed by andrewpallarca [8/30/2014 7:00:49 PM]

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