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(5x − 3)2 =\left(5x\ -\ 3\right)^2\ =(5x − 3)2 =
25x2 − 925x^2\ -\ 925x2 − 9
25x2 −30x +925x^2\ -30x\ +925x2 −30x +9
25x2−30x−925x^2-30x-925x2−30x−9
25x−30x −925x^{ }-30x\ -925x−30x −9
Išspręskite lygtį (2x−18)(3x+21)=0\left(2x-18\right)\left(3x+21\right)=0(2x−18)(3x+21)=0
-9; 7
-9; -7
-7; 9
7; 9
Apskaičiuokite 3−2+3−3=\ 3^{-2}+3^{-3}= 3−2+3−3=
3−53^{-5}3−5
36
6−56^{-5}6−5
427\frac{4}{27}274
5−3: 5−1=5^{-3}:\ 5^{-1}=5−3: 5−1=
1625\frac{1}{625}6251
125\frac{1}{25}251
1−41^{-4}1−4
535^353
Apskaičiuok nežinomos kraštinės ilgį:
100 cm
1252 cm
10 cm
1252\sqrt{1252}1252
Rask lygiagretainio plotą:
171 cm2
285 cm2
135 cm2
Rask trapecijos plotą:
384 cm2
80 cm2
40 cm2
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