Solve for x. Simplify completely. x^2+4x+4=8

1 answer:

5 0

X^2+4x+4=8
-8 -8
subtract 8 from both sides

x^2+4x-4=0

now factor using quadratic formula
ax^2+bx+c=0

x= -b +-[ (sqrt (b^2-4ac))/2a ]

x=-2(1+sqrt(2))

x= 2(sqrt(2) -1)

hope that helps, hopefully you know how to plug and chug into quadratic formula. if not you can ask for help

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1) Method 1; by the rule three.

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djverab [1.8K]

The answer is: [A]: " $\frac{5}{21}$ " .
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Given:

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→ (6/5) * (7x) = 2 ;

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x = $\frac{5}{21}$ ;

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