Question

Exercițiul 4 vă rog
Vreau rezolvări complete

Answer 1

a) -5-6= -11

b) 312:(-3)= -(312:3)= -104

c) r5· (-r3)= -r5 · r3= -r15

d) 3-(-r5)=3+r5

e) (-2/5) · 2,5=(-2/5) · 5/2= - 2/5 · 5/2= -1/5= -1

f) 3î 1/4 · (-1î 3/13)= 3î 1/4 · (-3/11)= -3î · 1/4 · 3/13= -9/57

g) -r3/4 · r3/6 =r3 · 3r10 / 4·4 =r10·3 · 3/ 16 = r30·3/16 = 3r30/16

h) -5/r10 · 3r10/4 = -5 · 3/4 = -15/4

i) (-2/3) · (-5/6) =2/3 · 5/6= 1/3 · 5/3 =5/9

j) -4/15: 1î 1/5= -4/15 · 1/5 = -4/75

k) 314:(-100)=-(314:100)= -3,14

l) r30 : r6 = r30:6 =r5

m) r6 : 1/2=r6 · 2 = 2r6

n) (10r3) : (-5) = -10r3 :5 = -2r3

o) (-8r3):(8r3)= -1

p) -2r5/r6 : -6r5/-2r6 = - 2r5/r6 · 2r6/6r5 = -2/r6 · 2r6/6 = -2 · 2/6 = - 2/3

r = radical

î = întreg

sper ca te am ajutat ))