The answer to the question
Answer:
can you type the problem out please i will answer it i just the picture is kinda weird for me
Step-by-step explanation:
Answer:
so to do this we basicely just go through and substitute the anser in and see if it works.
60+10=70
60-10=50
NO
50+20=70
50-20=30
RIGHT
so the answer is the second one
I hope this helps you
x.x-2.3x+9-21=0
(x-3)^2-21=0
(x-3)^2=21
