Question

( 3x + 1 ) ( 3x - 8 )
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Answer 1

Answer:

$9{x}^{2} - 21x - 8$

Step-by-step explanation:

refer image

Answer 2

Answer:

=3x(3x+8) + 1(3x-8)

=9x²+24x+3x+-8

=9x²+21x-8

or agar identity wala hai to

=(3x)²+(1-8)+1×-8

=9x²-7-8