Answer:
2-sqrt14/2, 2+sqrt13/2.
Step-by-step explanation:
What you do is you have to do the quadratic equation like it says in the problem.
x= −b± sqrtb^2 −4ac
/2a
.
a=-2, b=4, c=5.
x=-4±sqrt(4)^2-4(-2)(5)/2(-2).
x=-4±sqrt16+40/-4.
x=-4±2sqrt14/-2.
2-sqrt14/2, 2+sqrt13/2. is your answer once you have done everything.
You first combine like terms -1x and -4x to make the equation 21=6-5x then subtract 6 from itself to cancel it out and from 21, 15=5x where x= 3
Answer:
2n-4
Step-by-step explanation:
You need to divide 320000 by 2 since the speed was divided by 2. The final answer is ...... 160000 Joules.
I hope this helped!!!! :D
