Answer:
y²+y-56=0
56=8×7
8-7=1
(y+8)×(y-7)=0
y=7
or
y=-8
so its 7,-8
y = -8, 7.
Step-by-step explanation:
y^2 +9y+2=8y+58
y^2 + 9y + 2 - 8y - 58 = 0
y^2 + y - 56 = 0
(y - 7)(y + 8) = 0
after 4 days 88 boats will have passes under the bridge
By applying Pythagoras theorem
Answer is √[109] inch
0.11 is the least amount.
