PreCalc Larson Chapter 2 Part I Review

i¹³

• -1
• 1
• i
• -i

Simplify

• (-7-3i)/10
• (-4-3i)/7
• 6i/7
• (4i-3)/7

Tags

CCSS.HSN.CN.A.3

Simplify

• (-8i+1)/10
• (8+i)/11
• (34-77i)/109
• (21-38i)/58

Tags

CCSS.HSN.CN.A.3

What complex number is represented by the graph?

• -3-i
• -3+i
• 1+3i
• 1-3i

Tags

CCSS.HSN.CN.B.4

Write a polynomial equation of least degree with roots of -3, -2i, 2i.

• (x+3)(x + 2i)(x - 2i) = 0
• x³-3x²+4x-12=0
• (x+3)(x²+4)=0
• x³+3x²+4x+12=0

Tags

CCSS.HSA.APR.B.3

How many complex roots and then how many real roots were in the previous problem? Reminder roots: -3, -2i, 2i

• 3, 3
• 2, 0
• 2, 1
• 2, 2

Find the roots of x⁴-10x²+9=0

• -3, -i, i, 3
• -3i, -1, 1, 3i
• -3, 3
• -3, -1, 1, 3

Determine whether 3 is a root of a⁴-13a²+12a=0

• yes
• no

(x-3)²

• x²-6x+9
• x² - 9
• x² + 9
• x² 

Tags

CCSS.HSA.APR.C.4

What are the zeros (x-intercepts)?

• x = 2,-2
• x = 2,-2,0
• x = 2,0
• x = -4,-2,2,0

Tags

CCSS.HSF-IF.C.7C