Автор - 078108vv

a)(x+3)^2-x^2=33
b)x^2-(x-5)^2=10

Ответ

Автор - serovaevgesha
а)x^2+6x+9-x^2=33
6x=33-9
6x=24
x=4
b)x^2-x^2+10x-25=10
10x=35
x=3,5

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