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

User Ayse
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2 Answers

2 votes

Answer:x=-2

Explanation:

User Antwoine
by
8.9k points
3 votes

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

User Htoniv
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