Q2M9 - PETA II - Average Roound

Simplify the complex numbers: (6 − 6i) + (7 + 6i)

• 13 + 12i

• -13 – 12i

• 13

• 13i

• 8+i

• i+8

• 8+5i

• 5i+8

Simplify

(12 - 4i) + (-2 + 8i)

• 8 + 104i

• 10 + 4i

• 14 - 4i

• 10 - 12i

What is the discriminant of -2x² − x − 1 = 0

• 76

• -7

• 9

• none of these

How many solutions will this quadratic equation x²+8x+16 has?

• 2 real solutions

• 2 imaginary solution

• 1 solution

• 3 solutions

Write this equation x² -6 = x in standard form.

• x² +6x=0

• x² -6x=0

• x² -x -6 =0

• x² +x -6

What does i² equal?

• -1

• √-1

• 1

• -√1