brayanguijosa brayanguijosa

30-05-2019
Mathematics

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Which of these is a correct expansion of (3x -2)(2x^2+5)

Which of these is a correct expansion of 3x 22x25 class=

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jimrgrant1 jimrgrant1

30-05-2019

Answer:

B

Step-by-step explanation:

Given

(3x - 2)(2x² + 5)

Each term in the second factor is multiplied by each term in the first factor

= 3x(2x² + 5) - 2(2x² + 6) ← distribute both parenthesis

= 3x × 2x² + 3x × 5 +(- 2) × 2x² +(- 2) × 5 → B

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