Class 9th Abhay 2026
DPP #3
#LP 1 : Evaluate each of the following using identities:
(i) (2x – 1/x)2
(ii) (2x + y) (2x – y)
(iii) (a2 b – b2 a)2
#LP 2: Evaluate each of the following using identities:
(i) (399)2
(ii) (0.98)2
(iii) 991 x 1009
(iv) 117 x 83
#LP 3: Simplify each of the following:
(i) 175 x 175 +2 x 175 x 25 + 25 x 25
(ii) 322 x 322 – 2 x 322 x 22 + 22 x 22
#LP 4:
#LP 5: Write the following in the expanded form:
(i) (a + 2b + c)2
(ii) (2a − 3b − c)2
(iii) (m+2n−5p)2
(iv)(ab+bc+ca)2
#LP 6: If a + b = 10 and ab = 21, find the value of a2 + b2 .
AIM
DPP #3
#LP 1 : Evaluate each of the following using identities:
(i) (2x – 1/x)2
(ii) (2x + y) (2x – y)
(iii) (a2 b – b2 a)2
#LP 2: Evaluate each of the following using identities:
(i) (399)2
(ii) (0.98)2
(iii) 991 x 1009
(iv) 117 x 83
#LP 3: Simplify each of the following:
(i) 175 x 175 +2 x 175 x 25 + 25 x 25
(ii) 322 x 322 – 2 x 322 x 22 + 22 x 22
#LP 4:
#LP 5: Write the following in the expanded form:
(i) (a + 2b + c)2
(ii) (2a − 3b − c)2
(iii) (m+2n−5p)2
(iv)(ab+bc+ca)2
#LP 6: If a + b = 10 and ab = 21, find the value of a2 + b2 .
AIM
