Find the difference. (9x^2-2x+7)-(+4x-1)

 9x^2 - 6x + 8

Step-by-step explanation:

(9x^2 - 2x + 7) - (4x - 1)     Subtract like terms

The term 9x^2 doesn't have any other term so it will stay alone.

-2x - 4x  = - 6x

7 - (-1) = 8

Put them together to get  9x^2 - 6x + 8  

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

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