With explanation
Please
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This is your answer 》
Let John has x marbles
Jivanti has (45- x) marbles
According to the given condition.
(x-5) (45-x-5)= 128
( x- 5) (40-x)= 128
40x-x^2-200+5x = 128
》x^2- 45x+328=0
This is the required quadratic equation.
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