Answer:
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
−9b2−18b=0
Step 2: Factor left side of equation.
(−9b)(b+2)=0
Step 3: Set factors equal to 0.
−9b=0 or b+2=0
b=0 or b=−2
115*20=2300.
50*5=250
First mechanic 20 hours
Second mechanic 5 hours
-2 and -2 Two negatives added equal a positive.............. . . .. . . . . . .
