You can do substitution 2x-2=x^2 -x -6; isolate all terms on one side 0= x^2 -x-2x -6+2; combine like terms x^2 -3x -4=0; factor the quadratic (x-4)(x+1)=0; each term is zero x-4=0 so x=4 and x+1=0 so x=-1. Now, y=2•4-2=6 and y=2•(-1) -2= -4 ; solutions for the system are ( 4,6) and ( -1, -4)
Answer:
All real numbers except x=-7
Step-by-step explanation:
Since 
is a discontinuity in the rational function, this makes the denominator equal to 0.
I know it is a triangle so 12×7=84÷2=42
Para comer um pouco mais tarde a gente não tem
Answer:
A
Step-by-step explanation:
We are given:
To make it simpler and more clear, we can let u = sin(x). So:
Now, it becomes obvious that we can factor, which produces:
Cancel:
And substituting back:
Hence, our answer is A.
