CHAPTER 4
MULTIPLICATION IDENTITIES
9TH STD
PRESENTED BY SWATHI V
II B.ED MATHEMATICS
MC23EDMM21
MAHTAMA COLLEGE OF EDUCATION
,GENERALIZED FORM
If the length and breadth are increased at a
time together then the generalized form as
For any positive number
d ad ad a,b,c,d
ac b (a+b)(c+d)=ac+ad+bc+bd
c c
a b
, FIND 26X64
32X46
• Solutions
26x64 32x46
(20+6)(60+4) = (30+2)+(40+6)
=20x60+2x4+6x60+6x4 =30x40+30x6+2x40+2x6
=1196 = 1472
MULTIPLICATION IDENTITIES
9TH STD
PRESENTED BY SWATHI V
II B.ED MATHEMATICS
MC23EDMM21
MAHTAMA COLLEGE OF EDUCATION
,GENERALIZED FORM
If the length and breadth are increased at a
time together then the generalized form as
For any positive number
d ad ad a,b,c,d
ac b (a+b)(c+d)=ac+ad+bc+bd
c c
a b
, FIND 26X64
32X46
• Solutions
26x64 32x46
(20+6)(60+4) = (30+2)+(40+6)
=20x60+2x4+6x60+6x4 =30x40+30x6+2x40+2x6
=1196 = 1472
