Question

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a,b,c,d,e,f

Answer 1

a)
=25•7/5-9•8/3=35-24=11
b)¥=radical
=¥3•(-¥75)-(-¥32)•¥2=-¥225+¥64=-14+8=-7
c)
-(1+¥3)(¥3-1)-(¥5-1)(¥5+1)=
-(3-1)-(5-1)=-2-4=-6
d)
lg100•lg0,1-0,5•8=
10•(-1)-4=-10-4=-14
e)
3!•4!-5!•0!=3!•4!-0=6*24=144
g)
2^(x+1)•2^(-x)-3^2y•9^(-y+1)
=2^(x+1-x)-3^2y•3^(-2y+2)=
=2^1-3^(2y-2y+2)=
=2-3^2
=2-9=-7
h)
(1-i)^2•(1+i)^2-(-i)•i=
(1-i^2)^2-(-i^2)=
(1+1)^2-(-1)^2=2^2-1^2=4-1=3

Daca ai rezultatele la final a-mi verifica sa nu fi greșit la calcule
Daca găsești ceva, corectam împreuna