Question

$(5x + 3)(9x + 3)$

Answer 1

(5x + 3)(9x + 3)

45x² + 15x + 27x + 9

hope this helps .

Answer 2

Answer :-

______________________

( 5x + 3 ) ( 9x + 3 )

= 5x ( 9x + 3 ) + 3 ( 9x + 3 )

= 45x² + 15x + 27x + 9

= 45x² + 42x + 9 [ ★ Required answer ]


Now verifying the answer ,

45x² + 42x + 9

= 3 ( 15x² + 14x + 3 )

= 3 { 15x² + ( 9 + 5 )x + 3 }

= 3 { 15x² + 9x + 5x + 3 }

= 3 { 3x ( 5x + 3 ) + 1 ( 5x + 3 ) }

= 3 { ( 5x + 3 ) ( 3x + 1 ) }

= ( 5x + 3 ) × 3 ( 3x + 1 )

= ( 5x + 3 ) ( 9x + 1 ) [ • Hence Proved ]

____________________________

★ Be Brainly ★