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Lim, x = 3

√6x-1 -√5x+1 = √3,6-1 -√3.5+1

User Noxasaxon
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1 Answer

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To solve for x in the equation 3√(6x-1) - √(5x+1) = √3.6-1 - √3.5+1, we need to simplify and isolate x.

Starting with the left side of the equation:

3√(6x-1) - √(5x+1) = √3.6-1 - √3.5+1

We can simplify the square root terms on the right side:

3√(6x-1) - √(5x+1) = √(18-1) - √(15+1)

3√(6x-1) - √(5x+1) = √17 - √16

Now, we can square both sides of the equation to eliminate the square roots:

(3√(6x-1) - √(5x+1))^2 = (√17 - √16)^2

Expanding both sides:

(3√(6x-1))^2 - 2(3√(6x-1))√(5x+1) + (√(5x+1))^2 = (√17)^2 - 2√17√16 + (√16)^2

9(6x-1) - 2(3√(6x-1)√(5x+1)) + 5x+1 = 17 - 2√272 + 16

We can simplify the right side:

54x - 9 - 6√(6x-1)√(5x+1) + 5x + 1 = 17 - 2√272 + 16

Combining like terms:

59x - 8 - 6√(6x-1)√(5x+1) = 33 - 2√272

Now, we want to isolate the terms with square roots:

-6√(6x-1)√(5x+1) = -2√272

Dividing both sides by -2:

3√(6x-1)√(5x+1) = √272

Squaring both sides to eliminate square roots:

(3√(6x-1)√(5x+1))^2 = (√272)^2

9(6x-1)(5x+1) = 272

We can then expand and simplify:

270x^2 + 225x - 9 - 45 = 272

270x^2 + 225x - 54 = 272

Rearranging the equation:

270x^2 + 225x - 326 = 0

Now, we can solve this quadratic equation for x.

User H Ketabi
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