Find the value of x in the figure. if the answer is not an integer, round to the nearest tenth.
(image)
a.
54°
b.
59°
c.
75°
d.
83°

D. 83
The reason is because the shape is a Pentagon and the interior angles of a Pentagon are 540 degrees. So add up all the angles which are given to you and you subtract that answer by 540 and that gives you the end answer.

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)

(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

This is impossible to answer without the graph from the if you post the graph then we can .