Question

(4а²+25)(2а+5)(2а-5)+600-17а²

Answer 1

Ответ:

$(4a {}^{2} + 25)(2a + 5)(2a - 5) + 600 - 17a {}^{2} \\ (4a {}^{2} + 25) \times (4a {}^{2} - 25) + 600 - 17a {}^{2} \\ 16a {}^{4} - 625 + 600 - 17a {}^{2} \\ 16a {}^{4} - 25 - 17a {}^{2} \\ 16a {}^{4} - 17a {}^{2} - 25$