3 years ago

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

Mathematics

2 answers:

vekshin13 years ago

5 0

Good evening ,

Answer:

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.

Bezzdna [24]3 years ago

4 0

Answer:

the answer is B -21, 3

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

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