evaluate the following algebraic expression

Answer:
substitute first bebs
1.
(2)²-2(2)+1
4-4+1
0+1
1 — answer
2.
(3)²-7(3)(5)+6(5)²
9- 105 + 6(25)
9-105+150
54
3. 4. antok na ko e, goodnight mwuah