What is (-3+ the square root of -25) - (4+ square root of -16)
the product of 8 and a number is 56, what is 2 less than the number?
Your problem:
(-3 + √-25) - (4 + √-16)
Working this out:
-3 + 5i - 4 - 4i
-7 + i
And that's as far as you can go to simplify here.
I hope this will help.