Losozhekt
6 год назад
Сократите дробь:
(5x + 3)^2 − (5x − 3)^2 /x
ОТВЕТЫ
Vazholyuk
Jul 12, 2019
(5x + 3)² − (5x − 3)² (5х+3+5х-3)(5х+3-5х+3) 10х·6
------------------------- = ----------------------------------- = ---------= 60
x х х
------------------------- = ----------------------------------- = ---------= 60
x х х
(5х+3)^2-(5x-3)^2/x=((5х+3)+(5x-3)*((5х+3)-(5x-3))/x=10x*6/x=60
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