0
3x2 + 9x + 2 is an expression; it is NOT an equation. You cannot solve an expression.
However, if you did have an equation: 3x2 + 9x + 2 = 0
Then dividing through by 3 gives: x2 + 3x + 2/3 = 0
or x2 + 3x = - 2/3
Completing the square on the left (add 9/4 to both sides) : x2 + 3x + 9/4 = 9/4 - 2/3 = 19/12
(x + 3/2)2 = 19/12
(x + 3/2) = +/- sqrt(19/12)
So x = -3/2 +/- sqrt(19/12)
What else can I help you with?
How do you solve 2x squared plus x plus 2 equals 0 by completing the square?
It cannot be solved because the discriminant of the quadratic equation is less than zero
How do you solve-t5t squared plus t?
_t(5t squared t+)
How do you solve 8x2 plus 14x plus 5 equals 0 by completing the square?
Please do not remove this question from Inappropriate or split any alts from it. Thanks!
How do you solve this a squared minus b squared plus ac minus bc?
hello
How do you solve b squared minus 8b plus 16?
(b-4) squared
How do you solve 2x squared plus x plus 2 equals 0 by completing the square?
It cannot be solved because the discriminant of the quadratic equation is less than zero
Can you solve by completing the square x2 plus 10x plus 220?
No because the discriminant of the given quadratic expression is less than zero.
How do you solve x plus 9 squared?
x=9 squared
Solve x squared plus 3x minus 1 by completing the square?
x² + 3x - 1 = [ x² + 3x + (3/2)²] - 1 - (3/2)² = (x + 3/2)² - 1 - (9/4) = (x + 3/2)² - (13/4) if you are still confused, i want you to follow the related link that explains the concept of completing the square clearly.
How do you solve-t5t squared plus t?
_t(5t squared t+)
When a squared plus b squared equals c squared what is the square root of the square root of the square root of a squared squared squared plus b squared squared squared?
Since a squared plus b squared equals c squared, that is the same as c equals the square root of a squared plus b squared. This can be taken into squaring and square roots to infinity and still equal c, as long as there is the same number of squaring and square roots in the problem. Since this question asks for a and b squared three times, and also three square roots of a and b both, they equal c. Basically, they cancel each other out.
How do you solve 8x2 plus 14x plus 5 equals 0 by completing the square?
Please do not remove this question from Inappropriate or split any alts from it. Thanks!
How do you solve this a squared minus b squared plus ac minus bc?
hello
How do you solve b squared minus 8b plus 16?
(b-4) squared
Solve for a c equals the square root of a squared plus b square?
This question cannot be answered. You will have to give me the number to the square root. * * * * * a = ±sqrt(c^2 - b^2)
Solve by completing square 2x² - 6x plus 7 equals 0?
This quadratic equation has no solutions because the discriminant is less than zero.
What is the square root of x squared plus y squared?
X + y
