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Solve the quadratic equation by the square root property (2x+5)^2=49 I'm in Pre-calculus and im not sure how to work a problem like this
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Solve the quadratic equation by the square root property (2x+5)^2=49

I'm in Pre-calculus and im not sure how to work a problem like this

User Yonatan Maman
by
8.0k points

1 Answer

2 votes
take the square root of both sides
remember to take the positive and negative root
2x+5=-7 or
2x+5=7
solve each

2x+5=-7
subtract 5
2x=-12
divide 2
x=-6

2x+5=7
subtract 5
2x=2
divid 2
x=1

x=-6 or 1
User Tirdad Abbasi
by
8.4k points
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