Multiply: 12a + 5b by 7a − B - Mathematics

Sum

Multiply: 12a + 5b by 7a − b

(12a + 5b) (7a − b) = 12a (7a − b) + 5b (7a − b)

= 84a² − 12ab + 35ab − 5b²

= 84a² + 23ab − 5b²

Is there an error in this question or solution?

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

Chapter 11 Algebraic Expressions
Exercise 11 (C) | Q 1.09 | Page 143

Notifications