Posted by Lala on Wednesday, February 16, 2011 at 8:34pm.
Please check if I did this right...
√(2x+1)+7= 3
7 7
√(2x+1)= 4
Square everything
√(2x+1)^2= 4^2
2x+1=16
1 1
2x=15
divide by 2 on both sides
x=7.5
CHECK: (Plug it in)
√(2(7.5)+1)+7= 3
√(16)+7= 3
4+7=3
11 doesn't equal 3
so the answer is no solution? right?

Math Algebra II  helper, Wednesday, February 16, 2011 at 8:47pm
correct, no solution

Math Algebra II  Lala, Wednesday, February 16, 2011 at 8:48pm
Thank you so much!
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