0
Best Answer
As written, that's 4x squared = -21 and x equals the square root of -21/4.
But if you meant that to be 12x, it factors out nicely to (2x + 3)(2x + 3) and x would equal -3/2
Wiki User
∙ 12y agoThis answer is:
Add your answer:
Earn +20 ptsQ: What the answer to 4x2 plus 12 plus 9 equals 0?
Write your answer...
Submit
Still have questions?
Continue Learning about Math & Arithmetic
Related questions
9x4 plus 27x3 - 4x2 - 12x equals 0?
There are four solutions to 9x4 plus 27x3 - 4x2 - 12x equals 0. One of the solutions is x = -3.
How do you solve 4x2 plus 50x equals 0?
4x2+50x = 0 4x(x+12.5) = 0 x = 0 or x = -12.5
Can you put the equation x2 - 5 -4x2 plus 3x equals 0 in the form ax2 plus bx plus c equals 0?
x2-5-4x2+3x = 0 -3x2+3x-5 = 0 or as 3x2-3x+5 = 0
How do you solve 4x2 plus 12x equals 0?
4x2 = -12x, divide both sides by 4x: x = -3
4x2 plus 2x equals?
Assuming that 4x2+2x = 0: 2x (2x+1) = 0 2x = 0 or 2x+1 = 0 x = 0 or -1/2
How do you factor 4x2 plus 12x plus 9 equals 0?
(2x + 3)(2x + 3)
How do you factor -4x2 plus 3x plus 1 equals 0?
-((4x + 1)(x - 1))
-4x2 plus y2-8x-12y plus 36 equals 0?
dont know sorry
4x2 - 8x plus 3 equals 0?
1/2 , 3/2
4x2 - 2x - 5 equals 0?
4x2 - 2x = 0
4x2-9x plus 1 equals 0?
sure it does... that would be true
Solve x for 4x2-13x plus 3 equals 0?
4x2 - 13 x + 3 = 0 (4x - 1)(x - 3) = 0 x = 3, 1/4
Copyright ©2024 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.