Question

39] Without multiplying directly,
which identity is used to find the
value of 105x 106 *
(A) (x + y)2 = x2 + 2xy + y2
(B) (x - y)2 = x2 - 2xy + y2
(C) xy2 = (x + y)(x - y)
(D) (x + a)(x + b)=x2 + (a + b)x + ab​

Answer 1

Answer in attachment!!!!!!

Answer 2

(D) (x+a)(x+b)=x2 + (a+b)x+ ab

(100+5)×(100+6)