Answer: (2x+5)(2x-5)
Explanation:
4x² - 25=
2²x² - 5²=
(2x)² - 5²=
(2x)(2x) - 5(5)=
(2x)(2x) - 5(2x) + 5(2x) - 5(5)=
2x(2x-5) + 5(2x-5)=(2x+5)(2x-5)
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