10^3=1000
10^2=100
8.8*1000+5.5*100=8800+550=9350
3y^2-6y-5y+10-8y+4+9y-18=3y^2-10y-4
X^2 + 9 = 0
x^2 = - 9
Нет действительных решений
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x^2 - 3x = 0
x(x - 3) = 0
x1 = 0;
x - 3 = 0 ==> x2 = 3
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6x^2 + 24 = 0 /:6
x^2 + 4 = 0
x^2 = - 4
Нет действительных решений
(a²+2ab+b²)/ab - (a²-2ab+b²)/ab = 4
(a²+2ab+b²-a²+2ab-b²)/ab = 4ab/ab = 4