Determine whether each trinomial is a perfect square trinomial. Write "yes" or "no".

Question

1. m^2+16m+64
2. 9r^2-6r+1
3. 4y^2-20y+25
4. 16p^2+24p+9
5. 25b^2-4b+16
6. 49k^2-56+16

Answer 1

1. m^2+16m+64 = (m+8)(m+8) - YES
2. 9r^2-6r+1 = (3r-1)(3r-1) - YES
3. 4y^2-20y+25 = (2y-5)(2y-5) - YES
4. 16p^2+24p+9 = (4p+3)(4p+3) - YES
5. 25b^2-4b+16 = (5p-4)(5p-4) - No, the middle term should be -40 for a perfect square
6. 49k^2-56+16 = (7k-4)(7k-4) - YES