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Hatshy [7]
3 years ago
10

Find all roots: x^3 + 7x^2 + 12x = 0 Show all work and check your answer.

Mathematics
1 answer:
enot [183]3 years ago
3 0

Answer:

x=0,x=-4,x=-3

Step-by-step explanation:

The given equation is

x^3 + 7x^2 + 12x = 0

Factoring by x:

(x^2 + 7x + 12)x = 0

One of the root is x=0. Let's solve the parentheses.

Expanding the trinomial

x^2 + 4x+3x + 12=0

Factoring

x(x + 4)+3(x + 4)=0

Factoring

(x + 4)(x+3)=0

This will give us the two remaining roots

x=-4,x=-3

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