Question 1

Write the equation of the parabola that has roots of $i\sqrt{7}$ and $-i\sqrt{7}$ and passes through the point $(2, 33)$

Accepted Answer

$y=3(x^2+7)$

Answer

$y=\frac{13}{2}(x^2+7)$

Answer

$y=3(x^2-7)$

Answer

$y=\frac{13}{2}(x^2-7)$

Question 2

Solve:    
$7x^2+5=6x$

Accepted Answer

$\frac{3+-i\sqrt{26}}{7}$

Answer

$\frac{3+-2\sqrt{11}}{7}$

Answer

$\frac{4+-i\sqrt{26}}{7}$

Answer

$\frac{3+-2i\sqrt{11}}{7}$

Question 3

Simplify:  $2i^3*4i^8$

Accepted Answer

$-8i$

Answer

$8$

Answer

$8i$

Answer

$-8$

Question 4

Simplify:  $i^{92}$

Accepted Answer

$1$

Answer

$-1$

Answer

$i$

Answer

$-i$

Question 5

Simplify:  $(-4+6i)^2$

Accepted Answer

$-20-48i$

Answer

$52$

Answer

$-20$

Answer

$52-48i$

Question 6

Find the roots of the function:  $f(x)=2(x+4)^2+16$

Accepted Answer

$-4+or-2i\sqrt{2}$

Answer

$-4+or-\sqrt{14}$

Answer

$+or-2i\sqrt{2}$

Answer

$-4+or-3i\sqrt{2}$

Question 7

Simplify:  $(4i^5)^2$

Accepted Answer

$-16$

Answer

$-16i$

Answer

$16i$

Answer

$16$

Question 8

Simplify:  $(-8+3i)-(7-3i)$

Accepted Answer

$-15+6i$

Answer

$65+3i$

Answer

$-15$

Answer

$45$

Question 9

Simplify:  $\frac{2 + 7i}{-6 + 10i}$

Accepted Answer

$\frac{29 - 31i}{68}$

Answer

$\frac{29 - 31i}{-64}$

Answer

$\frac{-82 - 31i}{68}$

Answer

$\frac{-3 - 33i}{17}$

Question 10

Complex Roots come in pairs, such as $(-3+i)$ and $(-3-i)$, that are called _____________.

Accepted Answer

conjugates

Answer

addends

Answer

inverses

Answer

quadends

Question 11

A parabola with two complex roots has _____ x-intercept(s)

Accepted Answer

no

Answer

infinite

Answer

two

Answer

one

Related quizzes

Related quizzes