Koko121213
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4 Wykonaj dzialania.
a) (x+2)(x-3) =
b) (2x - 1)(x+6) =
c) 3(x-4)(2x + 1) =
d) (5x-2)(x - 3) =​



Odpowiedź :

Annom

a) (x+2)(x-3)=x^2-3x+2x-6=x^2-1x-6

b)(2x-1)(x+6)=2x^2+12x-x-6=2x^2+11x-6

c)(2x-12)(2x+1)=4x^2+2x-24x-12=4x^2-22x-12

d)(5x-2)(x-3)=5x^2-15x-2x+6=5x^2-17x+6

Slawek080

[tex]a)~~(x+2)(x-3)=x^2-3x+2x-6=x^2-x-6\\b)~~(2x-1)(x+6)=2x^2+12x-x-6=2x^2+11x-6\\c)~~3(x-4)(2x+1)=(3x-12)(2x+1)=6x^2+3x-24x-12=6x^2-21x-12\\d)~~(5x-2)(x-3)=5x^2-15x-2x+6=5x^2-17x+6[/tex]

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