SOLUTION: the sqrt property tells us that if (2x-9)^2=9 is true then which of the following must also be true? a. 2x=(_is under the +) b. 2x-9=(_is under the +)9 c.2x=(_is under the +)18

Algebra ->  Algebra  -> Quadratic Equations and Parabolas -> SOLUTION: the sqrt property tells us that if (2x-9)^2=9 is true then which of the following must also be true? a. 2x=(_is under the +) b. 2x-9=(_is under the +)9 c.2x=(_is under the +)18       Log On

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Question 636048: the sqrt property tells us that if (2x-9)^2=9 is true then which of the following must also be true?
a. 2x=(_is under the +)
b. 2x-9=(_is under the +)9
c.2x=(_is under the +)18
d.2x-9=(_is under the +)3
Answer by jim_thompson5910(28476) About Me  (Show Source):
You can put this solution on YOUR website!
If , then take the square root of both sides to get

Note: we include the plus minus since %283%29%5E2+=+9 and %28-3%29%5E2+=+9