zapisz w jak najprosztszej postaci:
a)(5+2x)(3x-2)=
b)2x(4x-1)-(x-2)(x+2)=
c)2(5x-7y)-(3y-7x)=
x2 - do kwadratu ;]
a) 15x-10+6x2-2x= 6x2+13x-10
b) 8x2-2x-(x2-4)= 8x2-2x-x2+4= 7x2-2x+4
c) 10x-14y-3y+7x=17x-17y
a)(5+2x)(3x-2)=5*3x+5*-2+2x*3x+2x*-2=15x+-10+6x+-4x=17x+-10
b)2x(4x-1)-(x-2)(x+2)=2x*4x+2x*-1+-x*x+-x*2+2*x+2*2=
=8xkwadrat+-2x+-xkwadrat+-2x+2x+4=-2x+4+7xkwadrat
c)2(5x-7y)-(3y-7x)=2*5x+2*-7y+-3y+7x=10x+-14y+-3y+7x=17x+-17y
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
x2 - do kwadratu ;]
a) 15x-10+6x2-2x= 6x2+13x-10
b) 8x2-2x-(x2-4)= 8x2-2x-x2+4= 7x2-2x+4
c) 10x-14y-3y+7x=17x-17y
a)(5+2x)(3x-2)=5*3x+5*-2+2x*3x+2x*-2=15x+-10+6x+-4x=17x+-10
b)2x(4x-1)-(x-2)(x+2)=2x*4x+2x*-1+-x*x+-x*2+2*x+2*2=
=8xkwadrat+-2x+-xkwadrat+-2x+2x+4=-2x+4+7xkwadrat
c)2(5x-7y)-(3y-7x)=2*5x+2*-7y+-3y+7x=10x+-14y+-3y+7x=17x+-17y