Question

Which will result in a perfect square trinomial?
a.(3x – 5)(3x – 5)
b.(3x – 5)(5 – 3x)
c.(3x – 5)(3x 5)
d.(3x – 5)(–3x – 5)?

Answer 1

(3x-5)(3x-5) gives a perfect square trinomial
because it is in the (a-b)square format
(a-b)square= asquare -2ab +bsquare
asquare -2ab + bsquare is a trinomial