How do you solve the equation $x^{2} + 2 x = 17$ $x^2+2x=17$ by completing the square?

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How do you solve the equation $x^{2} + 2 x = 17$ $x^2+2x=17$ by completing the square?

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Answer 1 · 2016-12-06T22:14:11

$x = - 1 \pm \sqrt{18}$ $x=-1+-sqrt18$

Explanation:

$x^{2} + 2 x = 17$ $x^2+2x=17$
${(x + 1)}^{2} - 1 = 17$ $(x+1)^2-1=17$
${(x + 1)}^{2} = 18$ $(x+1)^2=18$
$x + 1 = \pm \sqrt{18}$ $x+1=+-sqrt18$
$x = - 1 \pm \sqrt{18}$ $x=-1+-sqrt18$

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How do you solve the equation $x^{2} + 2 x = 17$ $x^2+2x=17$ by completing the square?

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Science

Math

Humanities

... and beyond

How do you solve the equation x2+2x=17x^2+2x=17 by completing the square?

1 Answer

Explanation:

Related questions

Impact of this question

How do you solve the equation $x^{2} + 2 x = 17$ $x^2+2x=17$ by completing the square?