173k views
2 votes

9X^2-12X+4=0 X=?

User Wirsing
by
8.1k points

2 Answers

3 votes

9x^2-12x+4=0\\ (3x-2)^2=0\\ 3x-2=0\\ 3x=2\\ x=(2)/(3)
User Derek Ekins
by
7.7k points
4 votes

9x^2-12x+4=0


(3x)^2-2\cdot 2\cdot3x+2^2=0


(3x-2)^2=0, but...(3x-2)^2 \geq 0 , ∨ x∈R


So, (3x-2)^2=0


3x-2=0
3x=2
\boxed { x= (2)/(3) }
User Alice Girard
by
8.4k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories