Exercise 12 (D)
A. Which are perfect trinomial squares? Write Yes or No.
1. Q? + 10a + 16
2. 6² + 14b-49
4. r + 10x + 25
5. c? - 2cd-d?
7. 36d²+ 13 dx + x
8. 4x2 + 4x + 1
10. 1662 - 20by + 2572 11. 25x4 - 60x+y2 + 36y4
3. x² – 5x+4
6. 810? - 72ab + 1662
9. 49m2 + 140mn + 100n?
10. 16b2 - 20by + 25y2
11. 25x4 - 60x2y2 + 36y4
Answers
Answered by
1
yes
no
yes
no
yes
yes
no
yes
no
no
yes
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