Question

Show that (9p-5q)2 + 180pq = (9p+5p)

Answer 1

L.H.S

(9p-5q)2 +180pq

= 81p^2 -90pq + 25q^2 +180pq

here , you can find the vaule of L.H.S by (a-b)2 =a^2-2ab+b^2

= 81p^2 +25q^2 +90 pq

=( 9p+5q)2

mate i think you have written wrong R.H.S

Please cheak it at once....

i think mine answer is wright.