Question

Choose the correct sum of the polynomials (2x3 − 5x − 1) + (4x3 + 8x + 3).

Answer 1

Answer:

Option (b) is correct.

Step-by-step explanation:

Given: Polynomial $2x^3-5x-1$ and $4x^3+8x+3$

We have to find the sum of given polynomial and choose the correct option from given options.

Consider the given Polynomial $2x^3-5x-1$ and $4x^3+8x+3$

We have to find the sum that is $2x^3-5x-1+(4x^3+8x+3)$

Apply plus minus rule $+(-a)=-a$

We have,

$2x^3-5x-1+4x^3+8x+3$

Now adding like terms, we have,

Like terms are terms having same variable with same degree.

$(4+2)x^3+(8-5)x-1+3$

Simplify , we have,

$6x^3+3x+2$

Thus, option (b) is correct.

Answer 2

(2x3 − 5x − 1) + (4x3 + 8x + 3)
=6x^3 +3x +2

answer is  b. 6x3 + 3x + 2