Mathematics, 07.11.2019 18:31 maggie123456751

Solve x2 + 12x = –20 by completing the square.
add (startfraction b over 2 endfraction) squared to both sides of the equation. the value of (startfraction b over 2 endfraction) squared in this equation is .
write the left side of the equation as a binomial squared. the left side of the equation becomes ()2.
use the square root property of equality.
isolate the variable: x =

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Solve x2 + 12x = –20 by completing the square.
add (startfraction b over 2 endfraction) square...