Page 43 - CITS - WCS - Electrical - Hindi

वक शॉप कै लकु लेशन & साइंस - CITS

3x + 2y 2
2
2x - 3y 2
2
_________________
x + 5y 2
2
_________________
गुणा (Multiplication)
1 - 4x x 8x = - 4 x 8x 2+5
2
5
= -32x 7
2 (3d - 2d) 3d
2
= 9d - 6d 2
3
3 (5x + 3y) (5x - 3y)
= (5x) - (3y) 2
2
= 5x x 5x - 3y x 3y
= 25x - 9y 2
2
4 5x y x 8x y
5 3
2
= 40x y
7 4
5 (2a+b) (a+2b)
= 2a + 4ab + ab + 2b 2
2
= 2a + 2b + 5ab
2
2
6 8a b c x 3a b c
2
5 -5
3
-5 5
= 24a 5
भाग करना (Division)
12x 3 y 2
1 2 = 3xy
4x y
15y 15
2 = y10
15y 5
3 9c d ÷ c d 2 = 9c d
3
2
3
5
3a 2 x 4a x 5a 3
4 4
6a x 10a
60a 6

= a
5
60a
5 -25a ÷ -5a -8
15
25a 15
= 5a 8

= 5a a = 5a 23
15 8
6 4x y ÷ 2y
2
4x 2 y 2
=
2x

2y

31

CITS: WCS - इले कल - अ ास 4