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Question

Please solve by radicals. (x+1)^2=16/9

Submitted: 306 days and 9 hours ago.

Category: Math

Value: $9

Status: CLOSED

Accepted Answer

Solve (x + 1)^2 = 16/9 by radicals.

Note that 16/9 = (4/3)^2. This is very helpful. wink

(x + 1)^2 = 16/9

x + 1 = +/- sqrt[16/9]

x + 1 = +/- 4/3

x = -1 +/- 4/3

x = -3/3 +/- 4/3

x = -3/3 - 4/3
x = -3/3 + 4/3

x = -7/3
x = 1/3

check:

x = -7/3:

(-7/3 + 3/3)^2 = (-4/3)^2 = 16/9

x = 1/3:

(1/3 + 3/3)^2 = (4/3)^2 = 16/9

Expert:	Elizabeth
Pos. Feedback:	99.6 %
Accepts:	568
Answered:	5/14/2009

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