Answer:
The answer to your question is below
Step-by-step explanation:
2. [tex]\sqrt{-128}[/tex] Just find the prime factors of 128 and simplify
[tex]\sqrt{-2^{7}} = \sqrt{-2^{6} 2} = 2^{3}i \sqrt{2}[/tex]
[tex]8i\sqrt{2}[/tex]
3.- [tex]\sqrt{-9} + \sqrt{-16}[/tex] Get the square roots and simplify
3i + 4i
7i
4.- None of the choices is equal to one, because the exponents are pair.
5.- 1/3x² + 10 = 7
1/3x² = 7 - 10
1/3x² = -3
x² = -3(3)
x² = -9
x = ±3i
