perform necessary operations. (14t^4-4t^2+8t)+(4t^4-8t+27)-(8t^4+t^2+14)

To perform the given operations, we need to combine like terms in the expression:

(14t^4 - 4t^2 + 8t) + (4t^4 - 8t + 27) - (8t^4 + t^2 + 14)

The first step is to combine like terms within each of the parentheses:

(14t^4 + 4t^4 - 8t^4) + (-4t^2 - t^2) + (8t - 8t) + 27 - 14

Simplifying further, we get:

10t^4 - 5t^2 + 0t + 27 - 14

Finally, combining like terms by adding or subtracting, we have:

10t^4 - 5t^2 + 13

Subtract the polynomials.

(4t^3 - 8t + 19) - (-16t^3 + t^2 + 11t)

To subtract the polynomials, we need to distribute the negative sign to each term within the second polynomial:

(4t^3 - 8t + 19) - (-16t^3 + t^2 + 11t)

= 4t^3 - 8t + 19 + 16t^3 - t^2 - 11t

Next, we can rearrange the terms in descending order of the degree:

= (4t^3 + 16t^3) + (- t^2 - 8t - 11t) + 19

= 20t^3 - 20t - t^2 + 19

Thus, the subtraction of the polynomials is 20t^3 - 20t - t^2 + 19.

Add the polynomials.

(-10t^5 + 9t^4 - 3t^3 + 2t + 11) + (-6 - 3t - 3t^2 + 3t^3 + 3t^5)

To add the polynomials, we need to combine like terms:

(-10t^5 + 9t^4 - 3t^3 + 2t + 11) + (-6 - 3t - 3t^2 + 3t^3 + 3t^5)

Reordering the terms:

-10t^5 + 3t^5 + 9t^4 - 3t^3 + 3t^3 - 3t^2 - 3t + 2 + 11 - 6

Combining like terms:

(-10t^5 + 3t^5) + 9t^4 + 0t^3 - 3t^2 - 3t + 2 + 11 - 6

Simplifying further:

-7t^5 + 9t^4 - 3t^2 - 3t + 7

Thus, the sum of the polynomials is -7t^5 + 9t^4 - 3t^2 - 3t + 7.

Multiply the polynomials.

-2y^5(6y - y^2)

To multiply the polynomials, we will use the distributive property.

-2y^5(6y - y^2)

First, distribute -2y^5 to each term within the parentheses:

-2y^5 * 6y + -2y^5 * -y^2

Next, simplify each term by multiplying:

-12y^6 + 2y^7

Thus, the product of the polynomials is -12y^6 + 2y^7.

Multiply the polynomials.

(y^2 + y - 3)(2y^2 + 2y - 1)

To multiply the polynomials, we can use the distributive property and multiply each term in the first polynomial by each term in the second polynomial:

(y^2 + y - 3)(2y^2 + 2y - 1)

Multiplying each term, we get:

y^2 * 2y^2 + y^2 * 2y - y^2 * 1 + y * 2y^2 + y * 2y - y * 1 - 3 * 2y^2 - 3 * 2y + 3 * 1

Simplifying each term, we have:

2y^4 + 2y^3 - y^2 + 2y^3 + 2y^2 - y - 6y^2 - 6y + 3

Now, combining like terms, we get:

2y^4 + 4y^3 - 5y^2 - 7y + 3

Thus, the product of the polynomials is 2y^4 + 4y^3 - 5y^2 - 7y + 3.