Answer:
sas fact congruency
Step-by-step explanation:
angle and same side are given
both triangle have same side
Option D:
is the right answer
Step-by-step explanation:
Given polynomials are:

We have to find the sum of polynomials
So,

Combining like terms

Hence,
Option D:
is the right answer
Keywords: Polynomials, sum
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The answer is b, tell me if you don't understand.
2(15+N)
replace a number by N
replace the sum of 15 and N by (15+N)
and lastly, replace twice by 2
So your answer is 2(15+N)
Chess board? , the board if there is like a line with points that has points on the same line