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ekaterinabragi
@ekaterinabragi
July 2022
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упростите выражение 9х в квадрате -(5х-1)(2х+3)
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DREAM101
(^-степень, *-умножение)
Выражение: 9*x^2-(5*x-1)*(2*x+3)
Решаем по действиям:
1. (5*x-1)*(2*x+3)=10*x^2+13*x-3
2. 9*x^2-(10*x^2+13*x-3)=9*x^2-10*x^2-13*x+3
3. 9*x^2-10*x^2=-1*x^2
4. 9*x^2-(10*x^2+13*x-3)
5. 9*x^2-10*x^2-13*x+3
6. -x^2-13*x+3
Ответ:
-x^2-13*x+3
1 votes
Thanks 1
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Answers & Comments
Выражение: 9*x^2-(5*x-1)*(2*x+3)
Решаем по действиям:
1. (5*x-1)*(2*x+3)=10*x^2+13*x-3
2. 9*x^2-(10*x^2+13*x-3)=9*x^2-10*x^2-13*x+3
3. 9*x^2-10*x^2=-1*x^2
4. 9*x^2-(10*x^2+13*x-3)
5. 9*x^2-10*x^2-13*x+3
6. -x^2-13*x+3
Ответ: -x^2-13*x+3