Предмет: Алгебра, автор: ov1luck

Помогите решить задания СРОЧНО! ​

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Ответы

Автор ответа: 2252563
1

Ответ:

3) x^2-9-(x^2-8x+16)=x^2-9-x^2+8x-16=8x-25

4) 5x^2+10x-x-2+3(x^2+4x-4x-16)=2(4x^2+12x+9)-8

5x^2+9x-2+3x^2-48=8x^2+24x+10

-15x=60

x=-4

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