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Which expression is equal to x+8x+2⋅(x+2)(x−8)x2+13 ?

Responses

(x+8)(x−8)x3+26


(x+8)(x−8)x2+13


(x+8)2x3+26

(x+8)2x2+13

User HKumar
by
8.4k points

1 Answer

3 votes

Answer:

Explanation:

(x+8)(x−8)x2+13 is the answer

The given expression is:

x+8x+2⋅(x+2)(x−8)x2+13

To simplify this expression, you can start by simplifying the denominator:

2⋅(x+2)(x−8)x2+13 = 2(x2-6x-16)x2+13 = 2(x2-6x-16)x2 + 26x - 26x + 13

= 2(x2-6x-16)x2 + 26x + (-26x + 13)

Now you can rewrite the original expression as:

x+8x+(2(x2-6x-16)x2 + 26x + (-26x + 13))

= x(1 + 8x2(x2-6x-16)x2 + 26x + (-26x + 13))

x(2(x^2-6x-16)x^2 + 13)

We can simplify the expression inside the parenthesis first:

2(x^2-6x-16)x^2 = 2x^4 - 12x^3 - 32x^2

Substituting this back into the original expression, we get:

x(2x^4 - 12x^3 - 32x^2 + 13)

Multiplying out the brackets, we get:

2x^5 - 12x^4 - 32x^3 + 13x

Now, we can factor out a common factor of x:

x(2x^4 - 12x^3 - 32x^2 + 13)

= x(2x^4/x - 12x^3/x - 32x^2/x + 13/x)

= x(2x^3 - 12x^2 - 32x + 13/x)

Finally, we can factor the expression inside the brackets:

= x(2x^3 - 16x^2 + 4x^2 - 32x + 8x - 8 + 13/x)

= x(2x^2(x-8) + 4x(x-8) + 8(x-8) + 13/x)

= x(x-8)(2x^2+4x+8) + 13(x-8)/x

= (x-8)(x^3+2x^2+4x+13)/x

Now we can see that the expression can be written as:

(x-8)(x^3+2x^2+4x+13)/x

To simplify further, we can divide x into the numerator to get:

(x+8)(x−8)x^2+13

Therefore, the expression is equal to (x+8)(x−8)x2+13.

User Joseph Tura
by
8.3k points

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