You have the following code in your program. from array import * Which line of code would create an array? E = array([3, 6, 10]) E = array('b',[3, 6, 10]) E. array('b',[3, 6, 10]) E = array('b',3, 6, 10)

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

hi there!

1. define: accuracy

a) how close a measured value is to the actual (true) value.

hope this : )