What is the sum of the polynomials 6a²-17a-9 and -5a²+8a-2?
1 answer:
Answer:
Choice A) a² - 9a - 11.
Step-by-step explanation:
Separate the terms by the power of the variable,
.
Terms with power 2 on
:
- First equation: 6a²;
- Second equation: -5a².
Terms with power 1 on
:
- First equation: -17a;
- Second equation: 8a.
Terms with power 0 on
, which are also known as constant terms:
- First equation:
; - Second equation:
.
Apply the distributive property of multiplication in reverse. In other words, factor out terms with the same power and add the coefficients.
Terms with power 2 on
:
.
Terms with power 1 on
:
.
Constant terms:
.
Add the sum of the individual terms to find the sum of the two polynomials:
.
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---- = ----
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Answer:
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