Question

this question asked by Rohit brother
class 9 th question

1. Evaluate

(a) 103×107
(b) 95×96
(c) 104×96

2. factories
a. 9x^2+6xy+y^2
b. 4y^2- 4y+1
c. x^2 - y^2/100

3. Expand using suitable identities
a. (x+2y+4z)^2
b. (2x - y + z)^2
c. (-2x + 3y + 2z )^2
d. (3a - 7b - c)^2
e. (-2x+5y-3z)^2
f. (1/4a-1/2b+1)^2

Answer 1

1.a.answer
(105+2)(105-2)
(105)^2 - (2)^2
11025-4
11021