(PLEASE HELP) Simplify the following expression:

a + 2c − 5b − c + a − b

A. 2a − 6b + 2c
B. 2a − 6b + c
C. a − 6b + c
D. a − 5b + 2c

nlgqer

step-by-step

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752