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3 years ago

Factorise the following expressions m²-9n²

Mathematics

1 answer:

Mashcka [7]3 years ago

3 0

Answer:

(m - 3n)(m + 3n).

Step-by-step explanation:

This is the difference of 2 squares, so we use the identity:

a^2 - b^2 = (a - b)(a + b).

So m^2 - 9n^2

(m - 3n)(m + 3n).

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2 years ago

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Answer:

Option B.

Step-by-step explanation:

Consider the below figure attached with this question.

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2 years ago

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2 years ago

Factorise the following expressions m²-9n²​

Factorise the following expressions m²-9n²