Add the polynomials.(7x^2-6x+6)+(3x^3-9x)

Yulia 2021-09-18 Answered
Add the polynomials.
(7x26x+6)+(3x39x)
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Expert Answer

FieniChoonin
Answered 2021-09-19 Author has 102 answers
A polynomial in a variable x is a function of the form anxn+an1xn1++a1x+a0. This polynomial has degree n. The constants ai are the coefficients and are constants.
To add two polynomials we add like terms, that is, add terms of the same degree. For example 2x2,4x2 are terms of the same degree but the terms 2x2,4x3 are terms of different degree.
The sum to be computed is (7x26x+6)+(3x39x). . Drop the parenthesis and combine like terms.
(7x26x+6)+(3x39x)=7x26x+3x39x
=3x3+7x2+(6x9x)+6
=3x3+7x215x+6
Hence, the sum is 3x3+7x215x+6.
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