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Select the correct answer.

What is the solution to the equation?

[tex]\[ \sqrt[3]{2x + 5} = 5 \][/tex]

A. 240
B. 65
C. 60
D. 5


Sagot :

Let's solve the equation [tex]\(\sqrt[3]{2x + 5} = 5\)[/tex] step-by-step:

1. Eliminate the cube root: To remove the cube root, we need to cube both sides of the equation:
[tex]\[ \left(\sqrt[3]{2x + 5}\right)^3 = 5^3 \][/tex]
[tex]\[ 2x + 5 = 125 \][/tex]

2. Isolate the term with [tex]\(x\)[/tex]: Subtract 5 from both sides to isolate the term with [tex]\(x\)[/tex]:
[tex]\[ 2x + 5 - 5 = 125 - 5 \][/tex]
[tex]\[ 2x = 120 \][/tex]

3. Solve for [tex]\(x\)[/tex]: Divide both sides by 2 to solve for [tex]\(x\)[/tex]:
[tex]\[ \frac{2x}{2} = \frac{120}{2} \][/tex]
[tex]\[ x = 60 \][/tex]

Therefore, the correct answer is [tex]\(x = 60\)[/tex], which corresponds to option C.

So, the solution to the equation [tex]\(\sqrt[3]{2x + 5} = 5\)[/tex] is:
[tex]\[ \boxed{60} \][/tex]