Question

Check all polynomials that are perfect square trinomials:

49x^2 − 8x + 16

4a^2 − 20a + 25

25b^2 − 5b + 10

16x^2 − 8x + 1

Answer 1

The perfect square trinomials are
49x2 − 8x + 16

4a2 − 20a + 25

They are perfect squares because the FIRST and LAST term have a whole number square root.

Answer 2

all of them except 25b^2 − 5b + 10

Answer 3

@swaggie