4 years ago

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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