I'm pretty sure the answer is D.
Answer:
see below
Step-by-step explanation:
whenever there is negative number being squared, you need to add the brackets so that you inside the - 1 in front of the number
so this step is wrong

the -9 ² , you must include the brackets to include the -1 in front of the 9
so it should be

so you will get = 1
and then you continue with other parts of the formula and you will get real solutions
hope this helps
please mark it brainliest
Answer:
QT < TR.
Step-by-step explanation:
QT = TR because TZ is a mid segment so QT < TR is false.
Answer:
9n + 15
Step-by-step explanation:5XN + 5X3 + 4N = 5n + 15 + 4n = 9n + 15