Don’t understand this unit. help please

the triangle is acute.

Step-by-step explanation:

Right angles are like a square with all 90° angles. Acute is like if you pinched the corners and made them smaller like 80° angles. Obtuse is like you bent the corners and made them 110° degree angles. Obtuse is like the top parts of a diamond acute it like the bottom part of the diamond. I like to think of it this way, right=square, obtuse=octogaon, acute=triangle. Not the best way to explain it but I hope this helps a little.

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2