Question

18
Find the product of (a+b) and (a-b)​

Answer 1

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To find the product we can take the first equation over second . i.e.,

let ( a+b) →→ equation I

also ( a-b) →→ equation II

THEREFORE ,

a (a-b) b ( a-b)

a² - ab + ab -b²

*Note : positive and negative sign gets cancelled*

therefore ,

a² - ab +ab - b²

a² - b²

Thus , a² - b² is your final answer .

This also proves the algebraic equation lV

as ,

( a + b ) (a - b ) = a² - b²

HOPE IT HELPS ‼️.