Wyrażenie można przedstawić w postaci:
A.+8x+20
B.-16x-12
C.+8x+4
D.++20
PROSZĘ O SZCZEGÓLOWE OBLICZENIA :)
(x-2)² +(x+2)²-(x-2)(x²+2x+4) =
=x²-4x+4 +x²+4x+4 -(x³+2x²+4x-2x²-4x-8)=
=2x²+8-(x³-8)=
=2x²+8-x³+8=
=-x³+2x²+16
(x-2)² +(x+2)²-(x-2)(x²+2x+4) =x²-4x+4 +x²+4x+4 -(x³+2x²+4x-2x²-4x-8)=
=2x²+8-(x³-8)=2x²+8x³+8=-x³+2x²+16
Mysle ze pomoglam ;)
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(x-2)² +(x+2)²-(x-2)(x²+2x+4) =
=x²-4x+4 +x²+4x+4 -(x³+2x²+4x-2x²-4x-8)=
=2x²+8-(x³-8)=
=2x²+8-x³+8=
=-x³+2x²+16
(x-2)² +(x+2)²-(x-2)(x²+2x+4) =x²-4x+4 +x²+4x+4 -(x³+2x²+4x-2x²-4x-8)=
=2x²+8-(x³-8)=2x²+8x³+8=-x³+2x²+16
Mysle ze pomoglam ;)