Answer:
Side TQ has a length of /17 units
Step-by-step explanation:
the last one just did it
I got x=48/23 or 2 2/23
determinant:
(a)
D<0 means there are no real roots. there are two complex roots with imaginary components.
(b) D=16+20=36>0
D>0 means there are two real roots
(c) D = 20^2-4*4*25 = 0
D=0 means there is one real root with multiplicity 2