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olga nikolaevna [1]
3 years ago
5

Factor 25x2 – 16.

Mathematics
1 answer:
katrin [286]3 years ago
6 0
25x^2 - 16

(5x - 4)2 = 10x - 8
(5x + 4)2 = 10x + 8
(5x + 4)(5x - 4) = 25x^2 - 20x + 20x - 16 = 25^2 - 16
(5x + 1)(5x - 1) = 25x^2 - 5x + 5x - 1 = 25x^2 - 1

Answer:
C. (5x + 4)(5x - 4)
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