Answer:
There are two real roots because b²>4ac
in the equation, b²= 9² = 81.
4ac = 4×-4×-12= 72
the step by step explanation is to expand the binomial
1. y= 2r+5 2. $17 3. 5 rides
3 times 219 is 657 so you need 6 hundred value blocks 5 ten value blocks and 7 one value blocks