1. Polynomials 3: Finding remainders
Silent
Teacher
Intelligent Practice
Narration
Your Turn
Find the remainder when 𝑥 3 +4 𝑥 2 −3𝑥+2 is divided by (𝑥+5)
Find the remainder when 3𝑥 3 −20 𝑥 2 +10𝑥+5 is divided by (𝑥−6)
Find the remainder when −2𝑥 3 +3 𝑥 2 +12𝑥+20 is divided by (𝑥−4)
Example
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2. Find the remainder when 𝑥 3 +6 𝑥 2 +5𝑥−12 is divided by (𝑥−2)
Worked Example
Your Turn
Find the remainder when
𝑥 3 +6 𝑥 2 +5𝑥−12 is divided
by (𝑥−2)
Find the remainder when
𝑥 3 +6 𝑥 2 +5𝑥−12 is divided
by (𝑥+1)
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3. Find the remainder when 𝑥 3 +4 𝑥 2 −3𝑥+2 is divided by (𝑥+5)
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4. Find the remainder when 𝑥 3 +4 𝑥 2 −3𝑥+2 is divided by (𝑥+5) 𝑟=−8
𝑟=−7
Find the remainder when −2𝑥 3 +3 𝑥 2 +12𝑥+20 is divided by (𝑥−4)
𝑟=−12
Find the remainder when 2𝑥 3 +7 𝑥 2 −𝑥−2 is divided by (2𝑥+1)
𝑟=0
Find the remainder when 4𝑥 4 +5 𝑥 3 −6 𝑥 2 −16𝑥+12 is
divided by (2𝑥+1)
𝑟=0
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