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rezolvați in R ecuatia a)4x^2-25=0

Răspuns :

4x²-25=0
4x²=25
x²=25/4
x₁=5/2
x₂=-5/2
[tex]4 x^{2} -25=0 4 x^{2} =25 x^{2} =25:4 x= \sqrt{ \frac{25}{4} } x1 = + \frac{5}{2} x2 = - \frac{5}{2} [/tex]