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Which expression is equivalent to [tex]\( 10x^2y + 25x^2 \)[/tex]?

A. [tex]\( 5x^2(2y + 5) \)[/tex]

B. [tex]\( 5x^2y(5 + 20y) \)[/tex]

C. [tex]\( 10xy(x + 15y) \)[/tex]

D. [tex]\( 10x^2(y + 25) \)[/tex]

Sagot :

To determine which expression is equivalent to [tex]\(10 x^2 y + 25 x^2\)[/tex], let's factor the given polynomial step-by-step.

1. Identify Common Factors:
Both terms [tex]\(10 x^2 y\)[/tex] and [tex]\(25 x^2\)[/tex] share common factors. Specifically, they both contain the factor [tex]\(5 x^2\)[/tex].

- [tex]\(10 x^2 y = 5 x^2 \cdot 2 y\)[/tex]
- [tex]\(25 x^2 = 5 x^2 \cdot 5\)[/tex]

2. Factor out the Common Factor:
Factor [tex]\(5 x^2\)[/tex] out from both terms.

[tex]\[10 x^2 y + 25 x^2 = 5 x^2 (2 y) + 5 x^2 (5)\][/tex]

Combine the terms inside the parenthesis.

[tex]\[10 x^2 y + 25 x^2 = 5 x^2 (2 y + 5)\][/tex]

Thus, the equivalent expression is [tex]\(5 x^2 (2 y + 5)\)[/tex].

Hence, the correct choice is:

[tex]\[ \boxed{5 x^2 (2 y + 5)} \][/tex]