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3 years ago

What are the roots of the equation?

Mathematics

2 answers:

Arada [10]3 years ago

8 0

Answer:

Step-by-step explanation:

Given

x² + 6x - 9 = 0 (add 9 to both sides )

x² + 6x = 9

Using the method of completing the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(3)x + 9 = 9 + 9

(x + 3)² = 18 ( take the square root of both sides )

x + 3 = ± $\sqrt{18}$ = ± $\sqrt{9(2)}$ = ± 3 $\sqrt{2}$

Subtract 3 from both sides

x = - 3 ± 3 $\sqrt{2}$ → D

OlgaM077 [116]3 years ago

3 0

Answer:

Step-by-step explanation:

go look at the other answers on brainly you will see im right i am smart

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musickatia [10]

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2 years ago

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MrRissso [65]

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3 years ago

Let P = 0.50.30.50.7 be the transition matrix for a Markov chain with two states. Let x0 = 0.50.5 be the initial state vector fo

pav-90 [236]

Answer:

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Step-By-Step Explanation

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igomit [66]

Answer:

Step-by-step explanation:

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3 years ago

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Damm [24]

The answer to this question is $\frac{123}{500}$ . Hope this helps.