3 years ago

Uhhh help me , i give brainliest

Mathematics

1 answer:

Yuri [45]3 years ago

6 0

Answer:

Step-by-step explanation:

x² + 12x - 40 = 0

x² + 12x = 40

Now, 12/2 = 6. So add 6² = 36 to each side

x² + 12x + 36 = 40 +36

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Answer:

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Step-by-step explanation:

Hi, to answer this question we have to apply the next formula:

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