Question

using suitable identity,evaluate A. (x+10)(x-5)​

Answer 1

Answer:

(x+10) (x-5)

using identity: (x+a) (x-b) = x^2+(a-b)x-ab

=> now, x^2+10x^2-5x-50

=> subtract 5x from 10x

=>x^2+5x -50.

This is your answer friends........ Salmønpanna