wykonaj działania stosujac wzory skroconego mnozenia
(5x+3)2=
(2x-5)*(2x+5) =
(4-2y)2 =
(5x+3)²= (5x)²+(2•5x•3)+3²= 25x²+30x+9
(2x-5)•(2x+5) = (2x)•(2x)- 5•5= 4x²-25
(4-2y)² = 4²-(2•4•2y)+ (-2y)²= 16-16y+4y²= 4y²-16y+16
a)
b)
c)
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(5x+3)²= (5x)²+(2•5x•3)+3²= 25x²+30x+9
(2x-5)•(2x+5) = (2x)•(2x)- 5•5= 4x²-25
(4-2y)² = 4²-(2•4•2y)+ (-2y)²= 16-16y+4y²= 4y²-16y+16
a)
b)
c)