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b) 25:(-5)*4=-5*4=-20
c) 5*(-3-4)=5*(-7)=-35
d) (-3)²=(-3)*(-3)=9
e) (-5)²=(-5)*(-5)=25
f) 2²-(-3)²=4-9=-5
b) 25 : (-5) * 4 = (-5) * 4 = - 20
c) 5 * (-4 -3) =5* (-7) = - 35
d) -3^2= - 9 (bo nie ma nawiasu)
e) ( -5)^2= 25 ( bo jest nawias)
f) 2^2- (-3)^2 = 4 - 6 = -2