Question

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

Answer 1

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

Answer 2

(3x−2)(2x^2+5)

=(3x+−2)(2x^2+5)

=(3x)(2x^2)+(3x)(5)+(−2)(2x^2)+(−2)(5)

=6x^3+15x−4x^2−10

=6x^3−4x^2+15x−10