1.
(x+20) (-x+10) = 0
2.
(x+3)(-x-4) =0
50 балов даю)
С РЕШЕНИЕМ!!!
(x+20) (-x+10) = 0
2.
(x+3)(-x-4) =0
50 балов даю)
С РЕШЕНИЕМ!!!
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Ответ:
(х+20)(-х+10)=0
х+20=0. -х+10=0
х=-20. х=10
(х+3)(-х-4)=0
х+3=0 -х-4=0
х=-3. х=-4