sqrt{4-12x^2} is equal to (2 sqrt(sqrt(3)-3 x) sqrt(sqrt(3)+3 x))/sqrt(3)
what are the steps to get this answer
√[4 - 12x^2] = 2√[√3 -3x]*√[ √3 + 3x] / √3 simplify
√[4 (1 - 3x^2] = 2 √ [ 3 - 9x^2] / √3
2 √[1 - 3x^2] = 2 √ [ 3 - 9x^2] / √3 divide both sides by 2
√[1 - 3x^2] = √ [ 3 - 9x^2] / √3 multiply both sides by √3
√3 * √[1 - 3x^2] = √ [ 3 - 9x^2]
√[3[1 - 3x^2] ] = √ [ 3 - 9x^2]
√[3 - 9x^2] = √[ 3 - 9x^2]
And one side = the other side....just as asinus has said.....!!!!!
Hallo anonymous!
sqrt (4-12x^2)
sqrt (4-12x^2) = sqrt (4 * (1 - 3x²)) = 2 * sqrt (1 - 3x²)
= 2 * √(1- 3x²) = 2 * √[(1 + x√3) * (1 - x√3)]
sqrt (4-12x^2) = 2 * √[(1 + x√3) * (1 - x√3)]
Further calculations would result in no additional simplification.
:- )
under alternate forms there is (2 sqrt(sqrt(3)-3 x) sqrt(sqrt(3)+3 x))/sqrt(3)
do you know how they got it?
The whole backwards.
(2 sqrt(sqrt(3)-3 x) sqrt(sqrt(3)+3 x))/sqrt(3)
= (2 * √ ( √ (3) - 3x ) * √ ( √ (3) + 3x )) / √ (3)
= (2 √ (3 - 9x²)) / √ (3)
= √ ( 12 - 36 x²) / √ (3)
= ( √ (3) * √ (4 - 12 x²)) / √ (3)
= √ ( 4 - 12 x² )
√ ( 4 - 12 x² ) = (2 sqrt(sqrt(3)-3 x) sqrt(sqrt(3)+3 x))/sqrt(3)
Greetings :- )
√[4 - 12x^2] = 2√[√3 -3x]*√[ √3 + 3x] / √3 simplify
√[4 (1 - 3x^2] = 2 √ [ 3 - 9x^2] / √3
2 √[1 - 3x^2] = 2 √ [ 3 - 9x^2] / √3 divide both sides by 2
√[1 - 3x^2] = √ [ 3 - 9x^2] / √3 multiply both sides by √3
√3 * √[1 - 3x^2] = √ [ 3 - 9x^2]
√[3[1 - 3x^2] ] = √ [ 3 - 9x^2]
√[3 - 9x^2] = √[ 3 - 9x^2]
And one side = the other side....just as asinus has said.....!!!!!