с=3.93
(7-с)²-с(с-27) =49-14с+с²-с²+27с=49+13с= 49+13×3.93=49+51.09=100.09
Объяснение:
(7-3.93)²-3.93(3.93-27)=3.07²-3.93*(-23.07)=100.09
49-14c+c²-c²+27c=49+1 3c=49+13*3.93=100.09
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с=3.93
(7-с)²-с(с-27) =49-14с+с²-с²+27с=49+13с= 49+13×3.93=49+51.09=100.09
Объяснение:
(7-3.93)²-3.93(3.93-27)=3.07²-3.93*(-23.07)=100.09
49-14c+c²-c²+27c=49+1 3c=49+13*3.93=100.09