Pls help me 1 through 9 plss I’ll give 20 points and brainlest plss help me

1e+27

step-by-step explanation:

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative

step-by-step explanation:

consider the parallelogram shown in the attached image.

in the parallelogram hijk, the length of hk is given as,

from the properties of parallelogram we know that the opposite sides of a parallelogram are parallel to each other and are equal in measure.

therefore, the length of the side ij must be equal to the length of the side hk and that is .

hence, the expression for the length of ij confirms that hijk is a parallelogram.