## S.chand books class 8 maths solution chapter 13 Algebric Identities exercise 13 C

Exercise 13 C Question 1 Write down the following products. (i) (y+2)(y-2) (ii) (p+1)(p-1) (iii) (x-4)(x+4) (iv) (3b+7)(3b-7) (v) (9a+10b)(9a-10b) (vi) (5p2-7q)(5p2+7q) (vii) (a2+b2)(a2-b2) (viii) (ab-c)(ab+c) (ix) (x) (a2b3-x3y4)(a2b3+x3y4) Question 2 Find the following products (i) (x+y+z)(x+y-z) (ii) (l+m+n)(l-m+n) Question 3 Simplify : (i) (x+y)(x-y)(x2+y2) (ii) (2-x)(2+x)(4+x2) Question 4 Simplify : (a+b)(a-b)+(b+c)(b-c)+(c+a)(c-a) Question 5 Find …

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