solve the algebra equation.

Algebra
Tutor: None Selected Time limit: 1 Day

solve the equation using the quadratic formula.

2x^2 + 6x + 2 = 0

Sep 12th, 2014

2x^2 + 6x + 2 = 0

Where      a = 2         b = 6             c = 2

Now the quadratic formula is 

( - b ± √b^2 - 4ac ) / 2a

Now putting the values , we get

= ( -6 ± √6^2 - 4(2)(2) ) / 2(2)

= ( -6 ± √36 - 16 ) / 4

= ( -6 ± √20 ) / 4

= ( -6 ± √4*5 ) / 4

= ( -6 ± 2√5 ) / 4

Now taking 2 common, we get

= 2( -3 ± √5 ) / 4

= ( -3 ± √5 ) / 2

Hence the roots are     ( -3 ± √5 ) / 2

Sep 12th, 2014

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Sep 12th, 2014
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Sep 12th, 2014
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