Answer:
3. x
-1
5. n
6
7. n
11
Step-by-step explanation:
3. -7+x
-8 5. n-2
4 7. -18+n
-7
+7 +7 +2 +2 +18 +18
x
-1 n
6 n
11
That is expanded if im not mistaken LEL
Try this option ↓
Step-by-step explanation:
1) according to the condition two angles are equal, then two sides are equal also, it means
2) √x+4=√(5x+4);
3) the 'x' can be calculated if to solve this equation:
;



4) finally, answer: 9.