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Solve the following quadratic equation by completing the square x^2 -8x=48

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Solution x = -4, x = 12

Step by step:
x^2-8x=48

Add the same value to both sides.
x^2-8x+?=48+?

Add 16 to both sides.
x^2-8x+16=48+16

Use a^2-2ab+b^2=(a-b)^2 to factor the equation.
(x-4)^2=48+16

Add the numbers.
(x-4)^2=64

Solve the equation.
(x-4)^2=64
x=-4, 12
User Izrik
by
7.5k points
2 votes

Answer: x=12,-4

Explanation:

User Pavlina
by
7.7k points

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