Is of 6a²--9 -5a²+8a-2? a) a²-9a-11 b) a²--7 c) ²-9a-11 d) ²--7

Choice A) a² - 9a - 11.

Step-by-step explanation:

Separate the terms by the power of the variable, .

Terms with power 2 on :

Terms with power 1 on :

Terms with power 0 on , which are also known as constant terms:

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:

.

554.4

step-by-step explanation:

44*12.6=544.4