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(√3+2)² - (2-√3)²
√12
(3+4√3+4)-(4-4√3+3)
√3√4
3+4√3+4-4+4√3-3
2√3
8√3
2√3
=4
zadanie 1.15
analogicznie jak wyzej
(5+4√5+4)-(5-4√5+4)
√4√5
5+4√5+4-5+4√5-4
2√5
8√5
2√5
=4
zadanie 1.31
czekam na odpowiedz bo dokladnie nie widac potegi!!!!
3-(5-4) ·× 1 3/4 -1 3/4 (-0,3) do potegi zero ?
(-10/4 +7/4-10/7)
3-5+4 ×(7/4 +7/4 ×1 )
-5
2 ×14/4
-5
= -28/20= -7/5