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Levart [38]
4 years ago
11

Multiply: (2x2 − 5x)(3x2 + 9x + 3)

Mathematics
1 answer:
yaroslaw [1]4 years ago
3 0

Distribute sum groups

2x^2(3x^2 + 9x + 3) - 5x(3x^2 + 9x + 3)

Distribute

6x^4 + 18x^3 + 6x^2 - 5x(3x^2 + 9x + 3)

Distribute

6x^4 + 18x^3 + 6x^2 - (15x^3 + 45x^2 + 15x)

Simplify brackets

6x^4 + 18x^3 + 6x^2 - 15x^3 - 45x^2 - 15x

Collect like terms

6x^4 + (18x^3 - 15x^3) + (6x^2 - 45x^2 - 45x^2) - 15x

Simplify

<u>Answer: A) 6x^4 + 3x^3 - 39x^2 - 15x</u>

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