Question

Solve equation by using the quadratic formula. 6x^2 +2x =4?

Answer 1

Answer:

B) x =( 2/3, -1)

Step-by-step explanation:

Equation:

$6x {}^{2} + 2x = 4$

Solution:

We know that,

$\rm \: Quadratic \: formula (x)=\cfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

According to the problem,

• a = 6
• b = 2
• c = -4

Plugging them on the formulae,we obtain,

• $x = \cfrac{ - 2 \pm \sqrt{ 2 {}^{2} - 4 \{6 \times ( - 4) \} } }{2 \times 6}$

• $x = \cfrac{ - 2 \pm \: \sqrt{4 - 4 \{ - 24 \} } }{12}$

• $x = \cfrac{ - 2 \pm \: 10 }{12}$

• $x = \cfrac{ - 1 \pm5}{6}$

• $\boxed{x = \cfrac{2}{3} \: \rm or - 1}$

Choice B is accurate.

Answer 2

Answer:

Answer x=2/3, -1
Option B

Step-by-step explanation: