Wyrażenie -(4x-3)(x-2)-(2x+6)(-2x-1) można zapisać w postaci:
A. 25x
B. -8x2+3x-12
C. x-12
D. -8x2+21x
Z obliczeniami!
no to tak :
-(4x do kwadratu -8x-3x+6)-(-4x do kwadratu-2x-12x-6)=-4x do kwadratu+8x+3x-6+4x do kwadratu+2x+12x+6=8x+3x+2x+12x=25x odp.a
=-(4x²-8x-3x+6)-(-4x²-2x-12x-6)=
=-4x²+11x -6 + 4x²+14x+6=
=25x odp . A
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
no to tak :
-(4x do kwadratu -8x-3x+6)-(-4x do kwadratu-2x-12x-6)=-4x do kwadratu+8x+3x-6+4x do kwadratu+2x+12x+6=8x+3x+2x+12x=25x odp.a
=-(4x²-8x-3x+6)-(-4x²-2x-12x-6)=
=-4x²+11x -6 + 4x²+14x+6=
=25x odp . A