Solve w^3 - 9w = 0 by factoring

Mathematics

1 answer:

madam [21]3 years ago

5 0

Answer:

w = 0 , -3 , 3

Step-by-step explanation:

w³ - 9w = 0

w(w² - 9) = 0

w(w² - 3²) = 0

w(w+3)(w-3) = 0 {a² - b² = (a + b)(a - b) }

w = 0 ; w + 3 = 0 ; w - 3 = 0

w = -3 ; w = 3

w = 0 , -3 , 3

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---------------------
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