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Factorize $25x^2 + 30x + 9$.
Given: $25x^2 + 30x + 9$.
To do: To solve $25x^2 + 30x + 9$.
Solution:
$25x^2 + 30x + 9$
$=25x^2+15x+15x+9$
$=5x( 5x+3)+3( 5x+3)$
$=( 5x+3)( 5x+3)$
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