Zad 19/ 88 zbiór zadań matematyka 1 gimnazjum a) -28+12 razy(-0,5)do kwadratu - 6 razy (-1/2)do sześcianu b) -(-1/2) do sześcianu + (- 0,4) do sześcianu : ( 1 i 1/5) do kwadratu razy 2 i 13/16. c ) -[- (-0,75) do kwadratu + ( 1i1/4)do kwadratu] - 4 r

-28+12*(-0,5)²-6*(-1/2)³=-28+12*0,25-6*(-0,125)=-28+3+0,75=-24,25=-241/4 -(-1/2)³+(-0,4)³:(1 1/5)²*2 13/16=1/8-8/125:36/25*45/16=1/8-8/125*25/36*45/16=1/8-1/8=0 -(-(-0,75)²+(11/4)²)-4*(-1/2)^4=-(-9/16+25/16)-4*(1/16)=-1-1/4=-11/4

a).-28 +12 · (-0,5)² - 6 ·(-1/2)³ = -28 +12 · 0,25 - 6 ·(-1/8) = -28+3+3/4 =    = -25 +3/4 = -24 i 4/4 +3/4 = -24 i 1/4 b).-(-1/2)³ +(-0,4)³ : (1 i 1/5)² · 2 i 13/16 = -(-1/8) +(-2/5)³ : (6/5)² · 45/16 =   = 1/8 - 8/125 : 36/25 · 45/16 = 1/8 - 8/125 · 25/36 · 45/16 =   = 1/8 - 2/45 · 45/16 = 1/8 - 1/8 = 0 c).-[-(-0,75)² +(1 i 1/4)²] -4 ·(-1/2)⁴ = -[-(-3/4)²+(5/4)²] -4 · 1/16 =    = -(-9/16+25/16) - 1/4 = -1 - 1/4 = -1 i 1/4