Engineers are planning a new cross street parallel to Elm St. What angle measure, x should the new street make with Cedar Rd. so that it is parallel to Elm St? The image is of two parallel lines named New St. and ELM St. cut by transversal tilted right and named as Cedar St. Exterior angles formed on the right side of the transversal are marked as x degrees and 132 degrees.

what are you trying find out?

step-by-step explanation:

the answer would be 0.54

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