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eimsori [14]
3 years ago
11

An expression is shown below:

Mathematics
1 answer:
aleksandr82 [10.1K]3 years ago
5 0

Answer:

(a)3y(x^3+4x-3x^2-12)

(b)3y(x^2+4)(x-3)

Step-by-step explanation:

Given the expression: 3x^3y + 12xy - 9x^2y -36y

<u>Part A</u>

If we consider the terms: 3x^3y ,12xy,9x^2y,36y in the expression. The common terms are 3 and y.

Therefore the greatest common factor of the terms is 3y.

Factoring this out, we obtain:

3x^3y + 12xy - 9x^2y -36y=3y(x^3+4x-3x^2-12)

<u>Part B</u>

Next, we factor the expression completely

3x^3y + 12xy - 9x^2y -36y\\=3y(x^3+4x-3x^2-12)\\$Rearranging we obtain:\\=3y(x^3-3x^2+4x-12)\\=3y[x^2(x-3)+4(x-3)]\\=3y(x^2+4)(x-3)

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