Question

Factorise the following
$(5 x^{2} - 10xy) - 4x + 8y$
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Answer 1

Answer:

When substances are mixed together, it can result either in a physical change or a chemical change. Example: If iron and sulphur are mixed, no chemical change occurs. But when the mixture is heated, it glows after some time and a black substance is formed which is different from iron and sulphur.

Step-by-step explanation:

Answer 2

Step-by-step explanation:

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