greenamberrose1181 greenamberrose1181

17-01-2020
Mathematics

contestada

Find the solution for the quadratic equation by completing the square.
x^2+18x=63

Respuesta :

profarouk profarouk

17-01-2020

Good evening ,

Answer:

x = 3 or x = -21

Step-by-step explanation:

x²+18x=63 ⇌ x²+18x+81 = 63 + 81

⇌ (x+9)² = 144 ⇌ (x+9)² = 12² ⇌ (x+9-12)(x+9+12) = 0

⇌ (x-3)(x+21) = 0

⇌ x=3 or x=-21.

:)

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riosisabella015 riosisabella015

28-07-2020

Answer:

the answer is B -21, 3

Answer Link

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