Решите уравнения!
a) 0,01x^2 - 100 = 0
b) 16x^2 - 25 = 0
c)4/9x^2 - 25/144 = 0
a) 0,01x^2 - 100 = 0
b) 16x^2 - 25 = 0
c)4/9x^2 - 25/144 = 0
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Answers & Comments
x^2=100÷0,01
x^2=10000
x=100
x=-10
б)16x^2=25
x^2=25/16
x=1,25
x=-1,25
c)4/9x^2=25/144
x^2=25/144*9/4
x^2=225/576
x=0,625.
x=-0,625