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Helga [31]
4 years ago
8

X^2 + 7x + 12 = 0. i need help finding the answer step by step

Mathematics
2 answers:
uysha [10]4 years ago
8 0

Answer:x=-2

Step-by-step explanation:

bekas [8.4K]4 years ago
7 0

x² + 7x + 12 = 0

To factor we need two numbers which add to 7 and multiply to 12.  In other words, guess the answer.  Here it's easy, 3 and 4.

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

When a product is zero, one of the factors must be zero.

x + 3 = 0  or   x + 4 = 0

x = -3  or  x = -4

Answer: x = -3  or  x = -4

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