Bevelle - Sem1- Final Exam - Part II

Express the number in terms of i. 1) √-9

• √3 i

• √-14

• -50

(5 − 6i) + (9 +9i)

• 14 + 3i

• 14 - 3i

• -14 - 3i

• -4 + 15i

Simplify. Write your answers in the form of a+bi, where a and b are real numbers. (7+√4) (4+√-64)

• 108i

• 108

• 12 + 64i

• 284 + 464i

Find the product and write the result in standard form. (9 + 8i)(55i)

• 85 - 5i

• 5 + 85i

• 85 + 5i

• -40i^2 - 5i + 45

Solve the equation. x² +81 = 0

• {9}

• {-9, 9}

• {-9i, 9i}

• {9i}

Solve the equation. x² + 12x +45 = 0

• {-9, -3}

• {-6 - 3i, -6 + 3i}

• {-6 + 3i}

• {-6 - 9i, -6 + 9i}