Question

Is my answer correct?

http://prntscr.com/d9arn2

Answer 1

@Luigi0210

Answer 2

@Vocaloid

Answer 3

Hm

Answer 4

We want two numbers such that their sum = -1 and their product = - 90.
We can use -10, and 9 to get
(i) %28x-10%29%28x%2B9%29+=+0

Answer 5

x =(1-√361)/2=(1-19)/2= -9.000

Answer 6

So yes your answer was right

Answer 7

but his answer is +10 and -9 which gives +1 in the middle and we want -1, so the answer is c, not d

Answer 8

no but x = +10, -9