Question

( 3 – 2y) ( 3+ 2y) + ( 2y – 3 ) kwadratu
(5-2x)( 5 = 2x ) + (2x + 5 ) kwadratu

Answer 1

( 3 – 2y) ( 3+ 2y) + ( 2y – 3 )²=

9-4y²+4y²-12y+9=

-12y+9

 

(5-2x)( 5+2x ) + (2x + 5 )²=

25-4x²+4x²+20x+25=

20x+50