Discover how IDNLearn.com can help you find the answers you need quickly and easily. Find the answers you need quickly and accurately with help from our knowledgeable and dedicated community members.

Solve the equation:

[tex]\[ \left(\frac{4}{5}\right)^{3x+2} = \left(\frac{5}{4}\right)^{x-2} \][/tex]


Sagot :

Certainly! Let's solve the equation step-by-step:

Given equation:
[tex]\[ \left(\frac{4}{5}\right)^{3x + 2} = \left(\frac{5}{4}\right)^{x - 2} \][/tex]

Step 1: Recognize that [tex]\(\left(\frac{5}{4}\right)\)[/tex] is the reciprocal of [tex]\(\left(\frac{4}{5}\right)\)[/tex]. Using this property, we can rewrite the equation:
[tex]\[ \left(\frac{4}{5}\right)^{3x + 2} = \left(\left(\frac{4}{5}\right)^{-1}\right)^{x - 2} \][/tex]

Simplify the right-hand side:
[tex]\[ \left(\frac{4}{5}\right)^{3x + 2} = \left(\frac{4}{5}\right)^{-(x - 2)} \][/tex]

Step 2: Since the bases are the same, we can set the exponents equal to each other. This gives us the equation:
[tex]\[ 3x + 2 = -(x - 2) \][/tex]

Step 3: Simplify the equation:
[tex]\[ 3x + 2 = -x + 2 \][/tex]

Step 4: Combine like terms. Add [tex]\(x\)[/tex] to both sides:
[tex]\[ 3x + 2 + x = 2 \][/tex]
[tex]\[ 4x + 2 = 2 \][/tex]

Step 5: Subtract 2 from both sides:
[tex]\[ 4x = 0 \][/tex]

Step 6: Divide both sides by 4:
[tex]\[ x = 0 \][/tex]

The solution to the equation is:
[tex]\[ x = 0 \][/tex]

Therefore, the value of [tex]\(x\)[/tex] that satisfies the equation [tex]\(\left(\frac{4}{5}\right)^{3x+2}=\left(\frac{5}{4}\right)^{x-2}\)[/tex] is:
[tex]\[ x = 0 \][/tex]