4 years ago

Solve the equation. 5x^3 – 45x = 0

Mathematics

1 answer:

KIM [24]4 years ago

7 0

Answer:

x = -3,0,3

Step-by-step explanation:

5x^3 – 45x = 0

Factor out 5x

5x( x^2 - 9) =0

Factor inside the parentheses which is the difference of squares

a^2 - b^2 = (a-b)(a+b)

5x( x-3)(x+3) =0

Using the zero product property

5x =0 x-3=0 x+3 =0

x=0 x=3 x=-3

x = -3,0,3

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