contestada

Solve for x
3x^2-6x=-3

A) x=1/3 or x=1
B) x=1 or x=-1
C) x=1
D) x=-1/3 or x=-1

Is it a,b,c,or d please help!!!

Respuesta :

Answer:

C. x = 1

Step-by-step explanation:

To solve this problem the best way is to use the quadratic formula. First make everything equal to 0 by adding 3 to both sides.

3x^2 - 6x + 3 = 0

The quadratic formula is: [tex]\frac{-b\pm\sqrt{b^2-4ac} }{2a}[/tex]. Substitute the values of a, b, and c into the formula. Keep in mind:

  • a = 3
  • b = -6
  • c = 3

[tex]\frac{-(-6)\pm\sqrt{(-6)^2-4(3)(3)} }{2(3)} \rightarrow \frac{6\pm\sqrt{36-4(9)} }{6} \rightarrow \frac{6\pm\sqrt{0} }{6} \rightarrow \frac{1\pm0}{1} \rightarrow 1[/tex]

Therefore, x = 1.