SOLUTION: How do you solve (5x-4)squared= 9?
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Question 320345: How do you solve (5x-4)squared= 9?
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
(5x-4)^2 = 9
Take the square root of each side of the equation to get:
5x-4 = 3
Add 4 to both sides of the equation to get:
5x = 7
Divide both sides of the equation by 5 to get:
x = 7/5
Confirm by substituting x = 7/5 into both sides of the equation to get:
(5*(7/5) - 4)^2 = 9
5 * 7/5 = 7
(7-4)^2 = 9 becomes:
3^2 = 9 which becomes:
9 = 9 which is true confirming that the value of x = 7/5 is good.
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