Name the kind or kinds of symmetry the following figure has: point, line, plane, or none. (Select all that apply.)
(3)

point
line
plane
none

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.

apex says the answer is true

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

$25 becasue a 10 increase would make it from 80 to 50