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3 years ago

Solve x2 + 6x = 7 by completing the square. What is the solution set of the equation?

Mathematics

1 answer:

Vikentia [17]3 years ago

4 0

$x^2+6x=7$
$x^2+6x+9=7+9$
$(x+3)^2=16$
$(x+3)^2=4^2$
$x+3=4\lor x+3=-4$
$x=4-3\lor x=-4-3$
$\boxed{x=1\lor x=-7}$

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Step by step explanation:

Given that,

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2 years ago

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3 years ago

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Step-by-step explanation:

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Step-by-step explanation:

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