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unit-5-algebraic-expressions

Unit-5 Algebraic Expressions

In this unit we will discuss algebra.

Evaluate (2x + 7)(3y + z).





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Learning Pundits Content Team

Written on Apr 22, 2019 6:58:20 PM

First, we regard 2x+7 as a single term and use distributivity of multiplication over addition.

(2x + 7)(3y + z) = (2x + 7)3y + (2x + 7)z

 = (2x.3y + 7.3y) + (2x.z + 7.z)

 = 6xy + 21y + 2xz + 7z