HELP PLEASE!!!
Solve 2x2 + 12x - 14 = 0 by completing the square. (2 points)

2(x + 6)2 = 26; x = -6 + , x = -6 -

2(x + 6)2 = 20; x = -6 + , x = -6 -

2(x + 3)2 = 32; x = 1, x = -7

2(x + 3)2 = 32; x = 13, x = 19

Question

HELP PLEASE!!!
Solve 2x2 + 12x - 14 = 0 by completing the square. (2 points)
		
2(x + 6)2 = 26; x = -6 +   , x = -6 - 
		
2(x + 6)2 = 20; x = -6 +   , x = -6 - 
		
2(x + 3)2 = 32; x = 1, x = -7
		
2(x + 3)2 = 32; x = 13, x = 19

anonymous · Answer

do you have an idea of what the answer is?

campbell_st · Answer

wow... that's an interesting way to solve the equation... 

but rewrite the equation as 

$$2x^2 + 12x = 14$$

factor out 2 on the left side

$$2(x^2 + 6x) = 14$$

now complete the square on left side....

campbell_st · Answer

I would have divided every term by 2

and you get

$$x^2 + 6x - 7 = 0$$

this equation can be fatored... find the factors of -7 that add to 6

the larger factor us positive

(x + factor 1)(x - factor 2)