Math, asked by allusai670, 7 months ago

Y2+4y=21 solved by completing the square

Answers

Answered by ryq1319

0

is it y^2+4y=21

y^2+4y-21=0

y^2+7y-3y+-21=0

y(y+7) -3(y+7)=0

y=-7,+3

Step-by-step explanation:

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