Find the cube roots of 8. Write the answer in a + bi form.

z = 2, -1 + sqrt(3)i, -1 + sqrt(3)i

Step-by-step explanation:

z³ = 8[cos(0) + isin(0)]

z = 8^⅓ = 2

z = {8[cos(2pi) + isin(2pi)]}^⅓

z = 2[cos(2pi/3) + isin(2pi/3)]

z = -1 + sqrt(3)i

z = {8[cos(4pi) + isin(4pi)]}^⅓

z = 2[cos(4pi/3) + isin(4pi/3)]

z = -1 - sqrt(3)i

$20.01

step-by-step explanation:

the sale price is (1.00 - 0.77)($87), or 0.23($87), or $20.01.