Answer:
The real answers is underlined.
(-3u + 3)(u³ - 1) = (-3u)(u³) + (-3u)(-1) + (3)(u³) + (3)(-1) = -3u³ + 3u - 3u + 3 = -3u³ + 3
(-10u - 3)(3u + 1) = (-10u)(3u) + (-10u)(1) + (-3)(3u) + (-3)(1) = -30u² - 10u - 3u - 3 = -30u² - 13u - 3
(-3y²)(3y³ + 9y + 27) = (-3y²)(3y³) + (-3y²)(9y) + (-3y²)(27) = -9y⁵ - 27y³ - 27y²
(a² + 3a)(-a² + 2a) = (a²)(-a²) + (a²)(2a) + (3a)(-a²) + (3a)(2a) = -a⁴ + 2a³ + 3a² - 6a = -a⁴ + 5a³ - 6a
(2b²)(-b³ + 4b + 3) = (2b²)(-b³) + (2b²)(4b) + (2b²)(3) = -2b⁵ + 8b³ + 6b²
Correct me if I'm wrong.
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Answers & Comments
Answer:
The real answers is underlined.
(-3u + 3)(u³ - 1) = (-3u)(u³) + (-3u)(-1) + (3)(u³) + (3)(-1) = -3u³ + 3u - 3u + 3 = -3u³ + 3
(-10u - 3)(3u + 1) = (-10u)(3u) + (-10u)(1) + (-3)(3u) + (-3)(1) = -30u² - 10u - 3u - 3 = -30u² - 13u - 3
(-3y²)(3y³ + 9y + 27) = (-3y²)(3y³) + (-3y²)(9y) + (-3y²)(27) = -9y⁵ - 27y³ - 27y²
(a² + 3a)(-a² + 2a) = (a²)(-a²) + (a²)(2a) + (3a)(-a²) + (3a)(2a) = -a⁴ + 2a³ + 3a² - 6a = -a⁴ + 5a³ - 6a
(2b²)(-b³ + 4b + 3) = (2b²)(-b³) + (2b²)(4b) + (2b²)(3) = -2b⁵ + 8b³ + 6b²
Correct me if I'm wrong.