Question

Y=\sqrt{x^{2} -4x-21} -\frac{6}{x^{2} -64}

Answer 1

Ответ:

нету чиди вдвььудуьв вьвьуду в аьк

Answer 2

To simplify the expression Y:

Y = √(x^2 - 4x - 21) - 6/(x^2 - 64)

First, let's factor both the numerator and denominator of the second term:

Y = √(x^2 - 4x - 21) - 6/[(x - 8)(x + 8)]

Now, we have a square root in the first term. To simplify it further, we can factor the expression inside the square root:

Y = √((x - 7)(x + 3)) - 6/[(x - 8)(x + 8)]

Now, you can simplify further if you'd like to. It depends on the specific context or requirement. If you need to perform additional operations or simplify it differently, please provide more details.

Answer 3

To simplify the expression Y = √(x² - 4x - 21) - 6/(x² - 64), we can follow these steps:

1. Factor the expressions inside the square root and the denominator: x² - 4x - 21 = (x - 7)(x + 3) x² - 64 = (x - 8)(x + 8)

2. Rewrite the expression with factored forms: Y = √((x - 7)(x + 3)) - 6/((x - 8)(x + 8))

3. Simplify further: Y = √(x - 7)√(x + 3) - 6/((x - 8)(x + 8))

4. Now, you can simplify the square roots and combine the fractions if possible, but this expression may not simplify much further without more specific information about the value of x or any particular simplification you're looking for. If you have a specific value of x in mind or further simplification instructions, please provide it, and I can assist you further.