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3 years ago

What are the solutions to the equation x2 - 8x = 10

Mathematics

1 answer:

mojhsa [17]3 years ago

5 0

Answer:

x = 4 ±√26

Step-by-step explanation:

Please write this as x^2 - 8x = 10, or x^2 - 8x - 10 = 0. " ^ " indicates exponentiation.

Let's complete the square:

x^2 - 8 x can be rewritten as

x^2 - 8x + 16 - 16, and so

x^2 - 8x = 10 becomes x^2 - 8x + 16 - 16 - 10 = 0, or

(x - 4)^2 = 26

Taking the square root of both sides, we get:

x - 4 = ±√26, or

x = 4 ±√26

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Answer:

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3 years ago

Let u = <-5, -9>, v = <6, 8>. Find -8u - 2v.

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4 years ago

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Answer:

Step-by-step explanation:

Let's FOIL out both sides and then see where we are after that:

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3 years ago