Use One of the Appropriate Patterns $( a + b ) ^ { 2 } = a ^ { 2 } + 2 a b + b ^ { 2 }$

question 308

Short Answer

Use one of the appropriate patterns $( a + b ) ^ { 2 } = a ^ { 2 } + 2 a b + b ^ { 2 }$ ; $( a - b ) ^ { 2 } = a ^ { 2 } - 2 a b + b ^ { 2 }$ ; $( a + b ) ( a - b ) = a ^ { 2 } - b ^ { 2 }$ to find the following product. $( 3 + 9 n ) ( 3 - 9 n )$

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Definitions:

Purchases Journal

An accounting ledger in which purchases of goods on credit are recorded.

Current Selling Prices

The present market value at which goods or services are offered for sale.

FIFO Method

An inventory valuation method that assumes the first items placed in inventory are the first sold, standing for "First In, First Out."