Multiply: 5a − 1 by 7a − 3 - Mathematics

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Sum

Multiply: 5a − 1 by 7a − 3

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Solution

(5a − 1)(7a −  3)

= 5a (7a −  3) − 1 (7a − 3)

= 35a2 − 15a − 7a + 3

= 35a2 − 22a + 3

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Chapter 11: Algebraic Expressions - Exercise 11 (C) [Page 143]

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Selina Concise Mathematics Class 8 ICSE
Chapter 11 Algebraic Expressions
Exercise 11 (C) | Q 1.08 | Page 143

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