*pew pew bang bang bang* Reloading Reloading *pew pew bang bang bang*

What is the solution set of the quadratic inequality x^2-5< or equal to 0

Can someone answer this question for me

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?