SOLUTION: Solve: (x + 2)^2 = 7 My answers are: a) 2 plus minus sqrt7 b) plus minus 47 c) -2 plus minus sqrt7 d) plus minus sqrt 47 I do not understand how they end up with roots? Th

Question 69887: Solve:
(x + 2)^2 = 7
My answers are:
a) 2 plus minus sqrt7
b) plus minus 47
c) -2 plus minus sqrt7
d) plus minus sqrt 47
I do not understand how they end up with roots? Thank you for the help on this one!
Answer by ptaylor(2198) (Show Source): You can put this solution on YOUR website!
Solve:
Lets first take the square root of both sides:

Next, we'll subtract 2 from both sides:
simplifying

Hope this helps---ptaylor

RELATED QUESTIONS
Solve: 5(x-2)^2 =3 I have four answers: A) -5 plus minus sqrt3 B) 5 plus minus... (answered by ankor@dixie-net.com)

solve (x-5)^2=7 A)-5+(minus underneath the plus) square root of 7 B) 5+(minus... (answered by tutorcecilia)

Solve: 5(x-2)^2 = 3 The answers are multiple choice: a)10 plus,minus sqrt3... (answered by ankor@dixie-net.com)

solve: -9(x-3)^2=-7 I am coming up with a solution of x=1 plus or minus 3 sqrt7 over... (answered by checkley71)

Solve using the quadratic formula: 5x^2 + x = 3 I have four choices: a) -1 plus... (answered by bucky)

Solve quadratic equation: x^2+3x+5=0 a. -3 plus minus i square root 29 over 2... (answered by MORUPHOSUOLALE)

What would the graph of the quadratic function with zeros 1/2 plus or minus sqrt7/3 look... (answered by ankor@dixie-net.com)

factor completely 3a^2 plus ax minus 3a minus... (answered by scott8148,sofiyac)

shit man what is 3x plus 2x minus 7x plus 7x minus 2x equals 9 plus 2x minus 3x plus two... (answered by stanbon)