Answer:
1. 60x
2. b^2
3. 14a
4. 4
5. 25
Step-by-step explanation:
1. (3x + 10) (3x + 10)
9x^2 + 30x + 30x + 100
9x^2 + 60x + 100
2. (b + 3) (b + 3)
b^2 + 3b + 3b + 9
b^2 + 6b + 9
3. (a + 7) (a + 7)
a^2 + 7a + 7a + 49
a^2 + 14a + 49
4. (5b + 2) (5b + 2)
25b^2 + 10b + 10b + 4
25b^2 + 20b + 4
5. (x - 5) (x - 5)
x^2 - 5x - 5x + 25
x^2 - 10x + 25
sana makatulong
