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otoshol62
@otoshol62
August 2022
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Прошу срочно!!!
Задание 1.
Упростите выражения:
1. (с^2 + 1)(с^2 - 1)(с^4 + 1)
2. 2(x + 3)^2 - (x - 1)^2
Задание 2.
Решите уравнение: х(х - 1) - (х - 5)^2=2
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vestipobedu200ozo2ob
Verified answer
Задание 1.
1. (c^4-1)(c^4+1)=c^8-1
2. 2(x^2+6x+9)-(x^2-2x+1)=2x^2+12x+18-x^2+2x-1=x^2+14x+17
Задание 2.
x^2-x-(x^2-10x+25)= 2
x^2-x-x^2+10x-25=2
9x=27
x=3
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Answers & Comments
Verified answer
Задание 1.1. (c^4-1)(c^4+1)=c^8-1
2. 2(x^2+6x+9)-(x^2-2x+1)=2x^2+12x+18-x^2+2x-1=x^2+14x+17
Задание 2.
x^2-x-(x^2-10x+25)= 2
x^2-x-x^2+10x-25=2
9x=27
x=3