Which polynomial equations have - i as one of their roots?

1. x^3 + 5x^2 - 20 = 0

2. x^3 - x^2 + x - 1 = 0

3. x^3 + 3x^2 + x + 3 = 0

4. x^3 - 2x^2 + x - 2 = 0

5. x^3 - 6x^2 - 16x + 96 = 0

A combination lock for a bicycle has four dials, each with the numbers from 1 to 6. If you have forgotten the combination that opens the lock, how long will it take you to try all the combinations, at a rate of one every 5 seconds

How does a cube root differ from finding a square root of a positive integer

Grandpa Mick opened a pint of ice cream. He gave his youngest grandchild 1/5 of the ice cream and his middle grand child 1/4 of the remaining ice cream. Then, the oldest grandchild 1/3 of the ice cream that was left after serving the others.

4 (2y-1) - 2 (2y) = 6 y=?

A sum of money is divided in ratio 3:5:9. Calculate the smallest share given that the largest share is $558

2a (5-b) = 3b+7 solve for b Step by step

What is x = 2.3 if you evaluate 8x for the value?

Complete the steps to factor the tens 30 x 40

Mr. Kessler bought 12 packs of toilet paper ... that's where it all went ... he spent a total of $78. If you are using the equation method to find the unit rate, which would be the independent quantity, the "x" value (the one that you want to be a

The width and length of a rectangle are consecutive integers. if the perimeter of the rectangle is 374 inches, find the width and length of the rectangle.