add. 9x³-7x²,5x²+3x³,-2x²-x²
Answers
Answer:
Adding Polynomials
Polynomials can be added in either vertical form or horizontal form.
Consider the addition of two polynomials :
(5x2 + 4x + 1) + (2x2 + 5x + 2)
In vertical form, align the like terms and add as shown below.
In horizontal form, you use the Associative and Commutative Properties to regroup like terms together and combine them as shown below.
Subtracting Polynomials
To subtract polynomials, remember that subtracting is the same as adding the opposite. To find the opposite of a polynomial, you must write the opposite of each term in the polynomial :
-(3x2 - 5x + 8) = -3x2 + 5x - 8
Solved Problems
Problem 1 :
Add :
(2y2 - y) + (y2 + 3y - 1)
Solution :
= (2y2 - y) + (y2 + 3y - 1)
Group like terms together.
= (2y2 + y2) + (-y + 3y) - 1
Combine like terms.