СРОЧНО !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Question

СРОЧНО !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Comments

:D

Answer 1

Номер 3
1) х^2-х^2-9=3х
3х=9
х=9:3
х=3
2) 4х^2-1-4х^2+16=0
1-16=-15
3) х^2=0,16:4
х^2=0,04
х=0,2