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Question

Solve 32x+10.3x9=0

A
0,2
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B
2,2
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C
2,2
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D
3,2
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Solution

The correct option is A 0,2

Consider the given equation,

32x+10.3x9=0

Let ,y=3x

Now ,

y210y+9=0

y29yy+9=0

y(y9)1(y9)=0

(y9)(y1)=0

When,

x9=0

x=9

Now ,

9=3x

32=3x

x=2

When,

y1=0

y=1

3x=1

3x=30

x=0

x=0,x=2

This is the answer .


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