Which of the followings is a correct interpretation of the expression-7-(-11)

Option B, Start at -7 on the number line and move 11 to the right

Step-by-step explanation:

Step 1:  Interpret -7 - (-11)

-7 - (-11)

-7 + 11

Start at -7, then add or move 11 to the right and your final destination is 4.

 Option B, Start at -7 on the number line and move 11 to the right

70.30

step-by-step explanation:

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0