Verified answer

√(x+4)-2√(x-1)=-1

√(x+4) = 2√(x-1) - 1

squrare both sides, rearrange and simplify

3x-7 = 4√(x-1)

square both sides

9x^2 - 42x + 49 = 16x - 16

9x^2 - 58x + 65 = 0

x = 13/9 or 5

answer x= 5

similarly for 2nd question