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odanoyan
@odanoyan
July 2022
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1)2x(5x-7)=2x*-5; 2)1,3x+0,2=0,7x*
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Rina11a
Что за звездочка? особенно в конце 2ого уравнения?
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odanoyan
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Rina11a
1)2x(5x-7)=2x*-5;10х*-14х=2х*-5
8х*-14х+5=0
Д=196-160=36
х1=(14+6):16 = 1.25
х2= (14-6):16=0.5
Ответ. 1.25; 0.5
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Answers & Comments
8х*-14х+5=0
Д=196-160=36
х1=(14+6):16 = 1.25
х2= (14-6):16=0.5
Ответ. 1.25; 0.5