SOLUTION: 9x^2=2x-5 My answer is x=4/3 Is this the correct answer?

Algebra.Com
Question 463331: 9x^2=2x-5
My answer is x=4/3
Is this the correct answer?

Found 2 solutions by Alan3354, jorel1380:
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
9x^2=2x-5
My answer is x=4/3
Is this the correct answer?
----------
Sub 4/3 for x and see.
-------
9*(4/3)^2 =? 2(4/3) - 5
9*16/9 =? 8/3 - 5
16 =? -7/3
I think not.
How did you get 4/3?

Answer by jorel1380(3719)   (Show Source): You can put this solution on YOUR website!
9x2=2x-5
9x2-2x+5=0
Solved by pluggable solver: SOLVE quadratic equation with variable
Quadratic equation (in our case ) has the following solutons:



For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

The discriminant -176 is less than zero. That means that there are no solutions among real numbers.

If you are a student of advanced school algebra and are aware about imaginary numbers, read on.


In the field of imaginary numbers, the square root of -176 is + or - .

The solution is

Here's your graph:

RELATED QUESTIONS

7x^2+6x - 9x^2-3 My answer is -2*x^2+6*x-3. Is this correct? (answered by stanbon)
5[x(2+y)] my answer is: 5[2x+xy] 10x+5xy is this correct? (answered by Alan3354)
Please help me solve this polynomial problem. My worksheet says perform the indicated... (answered by bucky)
Solve 2x (x +3) = x + 25 x=5/2 and x=5 is this answer correct. (answered by scott8148)
Use the quadratic formula to solve each of the following quadratic equations.... (answered by psbhowmick)
Help solve this equation Y>5/3x+4 My answer: x<3(y-4)/5 Is this... (answered by Boreal)
{(x+1)(2x-1)/(2x-3)(x-3)}-{(x-3)(x+1)/(3-x)(3-2x)}+ {(2x+1)(x+3)/(3-2x)(x-3) (answered by jim_thompson5910)
Thank you in advance for an answer to this question. The example 6x^2-9x=60 was given. (answered by Nfrey78)
Please help to make sure that I have done this correctly. (It says to line the problem... (answered by drk)