Hey there!
If you’re looking for the OPPOSITE of -1.9 (1.9) the answer would be B. If you are looking for the number line that is -1.9, the answer is D
So basically,
1.9 = choice B
-1.9 = choice D
Hope this helps you!
❤️
4a is the answer I believe you’re looking for
Answer:
which questions you want me to solve
<h2>
Hello!</h2>
The answers are:
a) 
b) 
<h2>Why?</h2>
First, we need to know that for this case:

So,


We must add
to the expression in order to form a perfect square trinomial,

Writing the trinomial as a binomial square:

Have a nice day!
A graph shows the function can be factored as
f(x) = (x -1)((x-8)² +1)
There is one real root and there are two complex roots. The latter can be found from the vertex form factor:
(x - 8)² + 1 = 0
(x - 8)² = -1
x - 8 = ±√(-1) = ±i
x = 8 ± i
The zeros of the function are {1, 8-i, 8+i}.