do parentheses first which gives you 42-4+111 then aubtract to get 38+111 which equals 149
Answer:

Step-by-step explanation:
Answer:
One Real number solution
Step-by-step explanation:
check the discriminant
12^2 - 4*4*9
b^2 - 4ac
...
144 - 16*9 = 0
one double root
Answer:
Step-by-step explanation:
find only for x or?