Ответ:
y= -11
Объяснение:
[tex](2y-3)(3y+1)+2(y-5)(y+5)=2(1-2y)^{2} +6y\\6y^{2} +2y-9y-3+2(y^{2}-25 )=2(1-4y+4y^{2} )+6y\\6y^{2} +2y-9y-3+2y^{2} -50=2-8y+8y^{2} +6y\\8y^{2} -7y-53=2-2y+8y2\\-7y+2y=2+53\\-5y=55\\y=-11[/tex]
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Ответ:
y= -11
Объяснение:
[tex](2y-3)(3y+1)+2(y-5)(y+5)=2(1-2y)^{2} +6y\\6y^{2} +2y-9y-3+2(y^{2}-25 )=2(1-4y+4y^{2} )+6y\\6y^{2} +2y-9y-3+2y^{2} -50=2-8y+8y^{2} +6y\\8y^{2} -7y-53=2-2y+8y2\\-7y+2y=2+53\\-5y=55\\y=-11[/tex]