NCERT Solutions for Class 8 Mathematics Chapter 9
Important NCERT Questions
Algebraic Expressions and Identities Chapter 9 Exercise 9.4
NCERT Books for Session 2022-2023
CBSE Board
Questions No: 3
Simplify: (i) (x²-5)(x+5)+25 (ii) (a²+5)(b²+3)+5
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(i) (x²-5)(x+5)+25 = x²(x+5)-(x+5)+25
= x²X+x²x5-5Xx-5X5+25
= x³+5x²-5x-25+25
= x³+5x²-5x
(ii) (a²+5)(b²+3)+5 = a²(b³+3)+5(b³+3)+5
= a²xb³+a²x3+5xb³+5×3+5
= a²b³+3a²++5b³+15+5
= a²b³+3a²+5b³+20
Class 8 Maths Chapter 9 Exercise 9.4 Solution in Video
for more answers vist to:
https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-9/