Answer:
2
Step-by-step explanation:
Step-by-step explanation:
= -√1
= -1
= √1
= 1
Difference -√1 and √1 are the sign of the number, where -√1 is negative and √1 is positive
For the expression

, the coefficient of the x² term is 1.
Answer:
no
Step-by-step explanation:
A right triangle consists of one angle being 90 degrees. Contrast to this picture, the triangle has no angle of 90 degrees.