0
2x2+12x+1 = 0
By dividing all terms in the quadratic equation by 2 will make completing the square easier to work out:
x2+6x+0.5 = 0
(x+3)2+0.5 = 0
(x+3)2-9+0.5 = 0
(x+3)2-8.5 = 0
(x+3)2 = 8.5
x+3 = the square root of 8.5
x = -3 and plus or minus the square root of 8.5
Add your answer:
Earn +20 pts
How do you solve 2xsquared -9x equals 18?
use algebra and then factor... x= -9 and 9
Solve by completing square 2x² - 6x plus 7 equals 0?
This quadratic equation has no solutions because the discriminant is less than zero.
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 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
Is there a math problem that cannot be solved by completing the square?
If you aren't dealing with algebra, such as x2+3x+21, then completing the square wont be able to solve the porblem, however if you are using algebra, and you cannot factorise, then completing the square will always work
How do you solve 2xsquared -9x equals 18?
use algebra and then factor... x= -9 and 9
Solve by completing square 2x² - 6x plus 7 equals 0?
This quadratic equation has no solutions because the discriminant is less than zero.
Solve by completing the square 6xsubscript2 -2x 10?
I couldn't answer the question because the question is not proper to slove. I just want you to follow the related link that explains how to solve the equation by completing the square.
How do you solve 2xsquared-9x equals 18?
2x2 - 9x = 18 2x2 - 9x -18 = 0 (2x - 18)(x + 9) x= -9 and 9
Solve 3x2-12x equals 15 using the method of completing the square?
Divide all terms by 3 so:- x2-4x = 5 Completing the square:- (x-2)2 = 9 x-2 = -/+3 x = -1 or x = 5
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 can you use the 'completing the square' method to solve an equation when the coefficient of x squared is more than 1?
i want to solve few questions of completing square method can u give me some questions on it
What is completing the square used for?
Completing the square is a method used to solve a quadratic function. This is a handy method when there are two instances of the same variable in the function.
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 by completing the square?
The related link "Purple Math" has an in depth explanation.
Is there a math problem that cannot be solved by completing the square?
If you aren't dealing with algebra, such as x2+3x+21, then completing the square wont be able to solve the porblem, however if you are using algebra, and you cannot factorise, then completing the square will always work
Solve by completing the square x2 14x -24?
the problem is not proper to slove. I just want to suggest to follow the related link that explains the concept of completing the square clearly.
