Question

Sendo : a = 2 , b = -4 , c = 5 , resolva

A) 2a + 4b + 2c
B) -a + b - c
C) 2a - 3b + c
D) -c + 2a - 2b

Answer 1

A) 2*2+4*(-4)+2*5 = 4-16+10 = -2

B) -(2)+(-4)-(5) = -2-4-5= -11

c) 2*2-3*(-4)+5 = 4+12+5 = 21

d) -(5)+2*2-2*(-4) = -5+4+8 = 7

Answer 2

A) 2a + 4b + 2c= -2

B) -a +b -c= -11

C) 2a - 3b + c= 21

D) -c + 2a - 2b= 7