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Factor the expression:

b) [tex]x^4 + 625y^4[/tex]

Answer :

To find the factors of the expression [tex]\( x^4 + 625y^4 \)[/tex], let's explore the components and see how the expression behaves:

1. Identify the Expression: The expression we need to factor is [tex]\( x^4 + 625y^4 \)[/tex].

2. Recognize Perfect Squares: The expression [tex]\( 625y^4 \)[/tex] is a perfect square because [tex]\( 625 = 25^2 \)[/tex] and [tex]\( y^4 = (y^2)^2 \)[/tex]. Thus, [tex]\( 625y^4 = (25y^2)^2 \)[/tex].

3. Analyze the Sum of Powers: The expression is in the form of [tex]\( a^4 + b^4 \)[/tex], where [tex]\( a = x \)[/tex] and [tex]\( b = 25y^2 \)[/tex].

4. Factoring Techniques:
- The sum of fourth powers, [tex]\( u^4 + v^4 \)[/tex], generally doesn't have simple factorization forms that are analogous to the difference of squares or sum/difference of cubes.
- Special techniques or approaches might be needed based on identity or numerical methods.

5. Evaluation of Factoring: For this specific expression, when further attempted with known identities or tested numerically, the expression remains as [tex]\( x^4 + 625y^4 \)[/tex].

Hence, [tex]\( x^4 + 625y^4 \)[/tex] does not have a straightforward factorization in terms of real linear factors or common formulas that apply to simpler polynomial expressions. It's important to recognize that not all polynomials can be factored into simpler polynomial components using elementary factoring techniques.

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