3 years ago

X2 – 25 = - 4x – 4 Solve the quadratic by factoring

Mathematics

1 answer:

Tasya [4]3 years ago

6 0

Answer:

x = -7, +3

Step-by-step explanation:

x² - 25 = -4x - 4

Put it all on one side

x² - 25 + 4x + 4 = 0

Put like terms together

x² + 4x - 21 = 0

Factor

(x + 7)(x - 3) = 0

x + 7 = 0 ⇒ x = -7

x - 3 = 0 ⇒ x = +3

x = -7, +3

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Answer:

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Step-by-step explanation:

we are given

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