Me ajuda .
√x+1=7
(√x+1)²=7²
x+1=49
x=49-1
x=48
√48+1=7
√49=7
7=7, ok
â(x + 1) - 7 = 0
â(x + 1) = 7
x + 1 = 7^2
x + 1 = 49
x = 49 - 1
x = 48
âx+1=7
(âx+1)²=7²
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Verified answer
√x+1=7
(√x+1)²=7²
x+1=49
x=49-1
x=48
√48+1=7
√49=7
7=7, ok
x=48
â(x + 1) - 7 = 0
â(x + 1) = 7
x + 1 = 7^2
x + 1 = 49
x = 49 - 1
x = 48
âx+1=7
(âx+1)²=7²
x+1=49
x=49-1
x=48