Honestly if anyone could help be understand how to solve these by factoring, that would be great! Thank you!

1) Option 3

2) Option 3

3) Option 3

4) Option 1

5) Option 2

6) Option 3

7) Option 1

Step-by-step explanation:

1)

Lets split the middle term.

∴

2)

Lets split the middle term.

∴

3)

∴

4)

∴

5)

Lets split the middle term.

∴

6)

Lets split the middle term.

∴

7)

Lets split the middle term.

∴

how is that middle school

step-by-step explanation:

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)