Answer: -600 and 1600 were invested into the two accounts.
Step-by-step explanation:
x = amount invested in the first account.
y = amount invested in the second account.
You start off with this equation


Subtract both sides by y.

Subsitude 1000 - x for x for the second equation.

Use the distributive property to solve for y.




Subsitude -600 for y in the first equation and solve for x.


-600 and 1600 were invested into the two accounts.
24- sqrt(720/4) divide 720 by 4
24 - sqrt (180) now break down 180 to 9*4*5
24- sqrt(9) *sqrt(4) *sqrt (5) so 9becomes 3, 4 becomes 2
24- 3*2*sqrt(5) multiply 3 and 2
24-6sqrt(5)
A -8 hope this helps good luck !