Answer: 4-x^2
explanation:
Divide the equation by 4. 16 divided by 4 is 4. and -4x^2 divided by 4 is -x^2.
The answer is -i. I hope that helps.
1.36 < sqrt(2) < 2.45
1.65 < sqrt(3) < 2.34
1.65 < sqrt(4) < 2.34
1.65 < sqrt(5) < 2.34
1.53 < sqrt(6) < 2.46
feel like several of these are wrong sorry