Zadanie 5.9-1.
a) $4x^2-9=0$
b) $16x^2-25=0$
c) $100x^2-9 = 0$
d) $4x^2-121 = 0$
e) $\frac{9}{4}x^2-4 = 0$
f) $6x^2-18 = 0$
g) $\frac{4}{5}x^2-2 = 0$
h) $4x^2-7 = 0$
i) $100x^2-81 = 0$
j) $\frac14 x^2-\frac19 = 0$
k) $x^2-49 = 0$
l) $x^2-144 = 0$
m) $9x^2-1 = 0$
n) $36x^2-1 = 0$
o) $4x^2-81 = 0$
p) $27x^2-18 = 0$
q) $25x^2-36 = 0$
r) $28x^2-14 = 0$
s) $x^2-50 = 0$
t) $2x^2-7 = 0$
u) $3x^2-24 = 0$
Zadanie 5.9-2.
a) $x^2+4 = 0$
b) $9x^2+4 = 0$
c) $4x^2+1 = 0$