Math Problem Statement

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Penyelesaian persamaan 2(25)^{x+1} + 5^{x+2} - 3 = 0

Solution

The given equation is:

2(25)x+1+5x+23=02(25)^{x+1} + 5^{x+2} - 3 = 0

Step-by-Step Solution:

Step 1: Simplify the powers of 25 and 5

Recall that 25=5225 = 5^2. So we can rewrite 25x+125^{x+1} as follows:

25x+1=(52)x+1=52(x+1)=52x+225^{x+1} = (5^2)^{x+1} = 5^{2(x+1)} = 5^{2x+2}

Thus, the equation becomes:

2(52x+2)+5x+23=02(5^{2x+2}) + 5^{x+2} - 3 = 0

Step 2: Factor out common powers of 5

Notice that both terms involve powers of 5. Let's express them as powers of 5 and try to factor. The equation is:

252x+2+5x+23=02 \cdot 5^{2x+2} + 5^{x+2} - 3 = 0

Since 5x+25^{x+2} is a common term, let's factor it:

5x+2(25x+1)3=05^{x+2}(2 \cdot 5^x + 1) - 3 = 0

Step 3: Solve for xx

At this point, solving the equation directly might involve trial and error, logarithmic functions, or checking the possible values of xx.

By testing potential values, or solving further, we

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Math Problem Analysis

Mathematical Concepts

Exponential Equations
Algebra
Logarithms

Formulas

25 = 5^2
(5^a)(5^b) = 5^{a+b}
logarithmic identities for solving powers

Theorems

Laws of Exponents
Logarithmic Conversion for Exponent Equations

Suitable Grade Level

Grades 10-12