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Question

Match the following to their roots.

A
x=0,x=3
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B
x=0,x=1
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C
x=1
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D
x=1,x=2
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Solution

Let's solve the given equations.

1. x2+3x+2=0

x2+x+2x+2=0
x(x+1)+2(x+1)=0
(x+1)(x+2)=0
x=1,x=2

2. x2+2x+1=0

x2+x+x+1=0
x(x+1)+1(x+1)=0
(x+1)(x+1)=0
x=1

3. x2+x+0=0

x2+x+0x+0=0
x(x+1)+0(x+1)=0
x(x+1)=0
x=0,x=1

4. x2+3x+0=0

x2+3x+0x+0=0
x(x+3)+0(x+1)=0
x(x+3)=0
x=0,x=3







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