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How do I solve this algebraic equation?
What are the steps involved in answering the following equation?
Sove the x:
x(2x + 1) - 2 (x - 3) = 2x (x + 1)
Thanks in advance.
5 Answers
- ?Lv 41 decade agoFavorite Answer
1. Start with distributing...
distribute the x to the 2x + 1
the -2 to the x - 3
and then the 2x to the x + 1
2. Subtract 2x squared from both sides
Leaves you wish 1x - 2x + 6 = 2x
3. Add/ subtract like terms
1x - 2x = -1x
Leaves -1x + 6 = 2x
4. Add 1x to both sides
Leaves you with 6 = 3x
5. Divide each side by three and get what x equals
- JosephineLv 71 decade ago
First remove the brackets
Gives
2x^2 + x - 2x + 6 = 2x^2 + 2x
Now gather like terms together
Remember that when a number crosses the equals sign then minus becomes plus and plus becomes minus
All that is left
3x = 6
x = 6/3
So x = 2
- 1 decade ago
Hey,
Multiply everything, then move all the x terms to one side and simplify.
x(2x + 1) - 2 (x - 3) = 2x (x + 1)
2x^2 + x - 2x +6 = 2x^2 + 2x
2x^2 -2x^2 + x - 2x - 2x = -6
x - 4x = -6
-3x = -6
x = -6/-3
x = 2
You're welcome!