What number must you add to the polynomial below to complete the square? x^2+17x

The number added to the polynomial by completing the square is

Explanation:

Given that the polynomial is

We need to determine the number that is added to the polynomial to complete the square.

The last term of the polynomial can be determined by dividing the term 17 by 2 and then squaring the term.

Thus, we have,

Last term =

Now, squaring the term, we have,

Last term =

Thus, the number added to the polynomial by completing the square is

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92

m=-16

step-by-step explanation: