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Solve 3x^2-4x-1=0 Can someone please explain to me how it went from 4 +/- the square root of 28 to 4 +/- 2 multiplied by the square root of 7.
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Solve 3x^2-4x-1=0

Can someone please explain to me how it went from 4 +/- the square root of 28 to 4 +/- 2 multiplied by the square root of 7.

Solve 3x^2-4x-1=0 Can someone please explain to me how it went from 4 +/- the square-example-1
User TerryMatula
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1 Answer

9 votes

square root of 28 is 2√7

√28 = √4 * √7 = 2√7

User Jignesh Thakker
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