"What is the relationship between Za and Zb?

Step-by-step explanation:

They are adjacent angles.

Adjacent angles are right next to each, or side-by-side. Considered (by my math teacher) the next door neighbors.

They are supplementary!

Explanation:

Not sure if this is the type of relationship you're after, but angles that add up to a flat line (or, 180 degrees) are known as supplementary.

x^2 + 81

we can factor this using difference of square binomials.

rewrite the equation:

x^2 - (-81)

factor:

(a^2 - b^2) = (√a^2 + √b^2)(√a^2 - √b^2)

(x^2 - (-81) = (x + √-81)(x - √-81)

we can remove the - from under the radical by multiplying it by i.

(x^2 - (-81) = (x + i√81)(x - i√81)

(x^2 - (-81) = (x + 9i)(x - 9i)

we can check our answer by using foil:

x^2 - 9ix + 9ix - 81i^2

x^2 - 81^2

i^2 = -1

x^2 + 81

same question do you know the answer