please tell the anwer of it and please tell step by step
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please tell the anwer of it and please tell step by step
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STEP-BY-STEP SOLUTION:
Take the square root of each side of the equation to set up the solution for x
(x – 1)^2 ½ = ± √20
Remove the perfect root factor x – 1 under the radical to solve for x.
x – 1 = ± √20
Simplify the right side of the equation.
x – 1 = ± 2√5
The complete solution is the result of both the positive and negative portions of the solution.
x = 2√5 + 1, –2√5 +1
The result can be shown in multiple forms.
Exact Form:
x = 2√5 + 1, –2√5 + 1
Decimal Form:
x = 5.47213595... , –3.47213595...