Factor & finding zeros
x^{2} -x-6=0

x = 3, -2

Step-by-step explanation:

To help us factor, we can split the middle term up into the sum of the terms -3x and 2x:

From there, we can factor out an x from the first two term and a 2 from the last two to obtain the equation

Factoring out an (x - 3) from each term gives us the equation

At this point, we can divide by either x - 3 or x + 2 to obtain the two equations

and

Solving both for x gives us the solutions x = 3 and x = -2. We can verify these by substituting them back into the original equation:

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh