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Danielle is trying to solve the equation 25^x+3=176 Explain in detail how Danielle should solve this problem. Then solve it step by step showing all your work and tell Danielle what the answer should be.

Sagot :

Given:

Equation is:

[tex]\begin{gathered} 25^x+3=176 \\ \end{gathered}[/tex]

Find-:

Solve the equation

Explanation-:

Simplify the equation then,

[tex]\begin{gathered} 25^x+3=176 \\ \\ 25^x=176-3 \\ \\ 25^x=173 \\ \\ 5^{2x}=173 \end{gathered}[/tex]

Taking ln both sides then,

[tex]\ln5^{2x}=\ln173[/tex]

Use logarithmic property

[tex]\ln a^b=b\ln a[/tex]

Then the value is:

[tex]\begin{gathered} \ln5^{2x}=\ln173 \\ \\ 2x\ln5=\ln173 \\ \\ 2x=\frac{\ln173}{\ln5} \\ \\ x=\frac{\ln173}{2\ln5} \end{gathered}[/tex]

The value of "x" is:

[tex]\begin{gathered} x=\frac{\ln173}{2\ln5} \\ \\ x=\frac{5.1533}{2\times1.6094} \\ \\ x=\frac{5.1533}{3.2189} \\ \\ x=1.601 \end{gathered}[/tex]

So, the value of "x" is 1.601