Example problems I — task. Mathematics CBSE, Class 10.

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Represent the following situations mathematically:

John and Jivanti together have

$45$ marbles. Both of them lost

$5$ marbles each, and the product of the number of marbles they now have is

$124$ . We would like to findout how many marbles they had to start with.

Mathematical representation

$=$

Answer variants:

$x^2 – 45x + 324 = 0$

$x^2 – 45x - 324 = 0$

$x^2 + 45x + 324 = 0$

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1. Example problems I