Question

using identities evaluate 73× 67

Answer 1

$<b >Hey here is your answer$

= 73 × 67
= (70 + 3)(70 - 3)

= by using identity => (a + b)(a - b)

= (70)^2 - (3)^2
= 4900 - 9
= 4891 answer

hope this helps you

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Answer 2

$\bold {\huge{Ello!!}}$

$<b >Here's your answer$

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73 × 67

[ • We can write ]

= ( 70 + 3 ) ( 70 - 3 )

= ( 70 )^2 - ( 3 )^2

[ • ( a )^2 - ( b )^2 = ( a + b ) ( a - b ) → using this identity ]

= 4900 - 9

= 3889

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$<b><u><marquee direction> Hope it helps !!$