Solve the following equation or inequality for the unknown variable. Round answer to two decimal places if necessary. (3x)2 – 10 =

Question

Solve the following equation or inequality for the unknown variable. Round answer to two decimal places if necessary.
(3x)2 – 10 = 56
4
x =

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Dâu 4 years 2021-07-31T15:10:23+00:00 1 Answers 102 views 0

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  1. Nho
    0
    2021-07-31T15:11:54+00:00
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    Answer:

    x = 2.7

    Step-by-step explanation:

    The given equation is :

    (3x)^2-10=56

    We need to solve it for x.

    It can be rewrite as follows:

    9x^2-10=56

    Adding 10 to both sides,

    9x^2-10+10=56+10\\\\9x^2=66\\\\x=\sqrt{\dfrac{66}{9}}\\\\x=2.70

    So, the value of x is equal to 2.7.

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