Addition and subtraction of polynomials 1. 3ab +(- 10ab) 2. (4a - 4b) + ( 2a + 6b ) 3. (-11m + 7) - (20m - 11) 4. (2m- 2n ) -( -15 m + 10n) 5. -6xy- (-16xy) plz pa answer ASAP show solution step-by-step

Step-by-step explanation:

1. 3ab +(-10ab)

-7ab

2.4a -4b

4 (a-b)

3.(-11m+7) -(20m-11)

-11m+7-20m+11

-31m+18

4.(2m-2n)-(15m+10n)

-13m-12n

5.-6xy- (-16xy)

-6xy+16xy

10xy

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