How do you solve $m^2-4m=3$ by completing the square?

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How do you solve $m^2-4m=3$ by completing the square?

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Answer 1 · 2017-06-14T20:36:58

$m=2+-sqrt7$

Explanation:

$"to "color(blue)"complete the square"$

add $(1/2"coefficient of m-term")^2" to both sides"$

$rArr"add " (-4/2)^2=4" to both sides"$

$rArrm^2-4mcolor(red)(+4)=3color(red)(+4)$

$rArr(m-2)^2=7$

$color(blue)"take the square root of both sides"$

$sqrt((m-2)^2)=+-sqrt7larr" note plus or minus"$

$rArrm-2=+-sqrt7$

$"add 2 to both sides"$

$rArrm=2+-sqrt7larr" exact values"$

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How do you solve $m^2-4m=3$ by completing the square?

1 Answer

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Science

Math

Humanities

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How do you solve m^2-4m=3m^2-4m=3 by completing the square?

1 Answer

Explanation:

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How do you solve $m^2-4m=3$ by completing the square?