NCERT Solutions for Class 9 Maths Chapter 2
Important NCERT Questions
Polynomials
NCERT Books for Session 2022-2023
CBSE Board and UP Board Others state Board
EXERCISE 2.5
Page No:48
Questions No:1 part:2
Use suitable identities to find the following products: (x + 8) (x – 10)
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(ii) (x + 8)(x + -10)
= x² + (8 – 10)x + 8 × (-10) [∵ (x + a)(x + b) = x² + (a + b)x + ab ]
= x² – 2x – 80