If you're stuck, watch this video for simplifying complex numbers.
Watch this video for simplifying square roots.
If you're stuck, watch this video for simplifying complex numbers.
Watch this video for simplifying square roots.
Question 1
1.
Simplify the expression. Write your answer as a imaginary number. No spaces.
\sqrt{-25}
Question 2
2.
Simplify the expression. Write your answer as a imaginary number. No spaces. Simplify any radicals.
\sqrt{8}\cdot\sqrt{-24}
Question 3
3.
Simplify the expression. Write your answer as an imaginary number.
(2i)^{5} \cdot (i\sqrt{6})^{2}
Question 4
4.
Solve the equation. List the solutions.
x2 - 4 = -104
Use x={#, #} format, with exactly one space after the comma, no others. List the negative number first. Simplify any radicals.
Question 5
5.
Solve the equation. List the solutions.
-(x - 1)^{2} = 4
Use x={#, #} format, with exactly one space after the comma, no others. List the negative number first. Simplify any radicals.
Question 6
6.
Solve the equation. List the solutions.
2x2 + 71 = -163
Use x={#, #} format, with exactly one space after the comma, no others. List the negative number first.
Simplify any radicals.
Question 7
7.
Simplify the expression. Write your answer as a complex number, a+bi, where a and b are real numbers.
No spaces.
(11-7i) + (2-5i)
Question 8
8.
Simplify the expression. Write your answer as a complex number, a+bi, where a and b are real numbers.
No spaces.
(-3+8i) - (1+8i)
Question 9
9.
Simplify the expression. Write your answer as a complex number, a+bi, where a and b are real numbers.
No spaces.
(7+i)(4+3i)
Question 10
10.
Simplify the expression. Write your answer as a complex number, a+bi, where a and b are real numbers.
No spaces.
(5-2i)(2+7i) - 2i(3i)2
Question 11
11.
REVIEW
Solve by factoring
3x^{2} -5x = 2
Use x={#, #} format, with exactly one space after the comma, no others. List the negative number first. Simplify any radicals. Use fractions, not decimals.
Question 12
12.
REVIEW
Solve by square roots.
1-x^{2}= -7
Use x={#, #} format, with exactly one space after the comma, no others. List the negative number first. Simplify any radicals. Use fractions, not decimals.
Question 13
13.
REVIEW
Solve by square roots.
3(x-2)^{2} = 12
Use x={#, #} format, with exactly one space after the comma, no others. List the negative number first. Simplify any radicals. Use fractions, not decimals.