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Question

If 15(3x−2)−13(x+7)+1=0; find the value of 4x2−4x+1.

A
154
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B
134
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C
124
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D
144
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Solution

The correct option is C 144
15(3x2)13(x+7)+1=0
9x65x35+1515=0
4x2615=0
4x=26
2x=13
So, value of
4x24x+1=131326+1
4x24x+1=144


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