פתרון
expand (1+x)5(1+ax)6
פתרון
1+6ax+15a2x2+20a3x3+15a4x4+6a5x5+a6x6+5x+30ax2+75x3a2+100x4a3+75x5a4+30x6a5+5x7a6+10x2+60ax3+150x4a2+200x5a3+150x6a4+60x7a5+10x8a6+10x3+60ax4+150x5a2+200x6a3+150x7a4+60x8a5+10x9a6+5x4+30ax5+75x6a2+100x7a3+75x8a4+30x9a5+5x10a6+x5+6ax6+15x7a2+20x8a3+15x9a4+6x10a5+x11a6
צעדי פתרון
(1+x)5(1+ax)6
(1+x)5הרחב את:1+5x+10x2+10x3+5x4+x5
=(1+5x+10x2+10x3+5x4+x5)(1+ax)6
=(1+ax)6(1+5x+10x2+10x3+5x4+x5)
הפעל את חוק מכפלת הסוגריים=(1+ax)6⋅1+(1+ax)6⋅5x+(1+ax)6⋅10x2+(1+ax)6⋅10x3+(1+ax)6⋅5x4+(1+ax)6x5
(1+ax)6⋅1+(1+ax)6⋅5x+(1+ax)6⋅10x2+(1+ax)6⋅10x3+(1+ax)6⋅5x4+(1+ax)6x5פשט את:(1+ax)6+5x(1+ax)6+10x2(1+ax)6+10x3(1+ax)6+5x4(1+ax)6+x5(1+ax)6
=(1+ax)6+5x(1+ax)6+10x2(1+ax)6+10x3(1+ax)6+5x4(1+ax)6+x5(1+ax)6
(1+ax)6הרחב את:1+6ax+15a2x2+20a3x3+15a4x4+6a5x5+a6x6
=1+6ax+15a2x2+20a3x3+15a4x4+6a5x5+a6x6+5x(1+ax)6+10x2(1+ax)6+10x3(1+ax)6+5x4(1+ax)6+x5(1+ax)6
5x(1+ax)6הרחב את:5x+30ax2+75x3a2+100x4a3+75x5a4+30x6a5+5x7a6
=1+6ax+15a2x2+20a3x3+15a4x4+6a5x5+a6x6+5x+30ax2+75x3a2+100x4a3+75x5a4+30x6a5+5x7a6+10x2(1+ax)6+10x3(1+ax)6+5x4(1+ax)6+x5(1+ax)6
10x2(1+ax)6הרחב את:10x2+60ax3+150x4a2+200x5a3+150x6a4+60x7a5+10x8a6
=1+6ax+15a2x2+20a3x3+15a4x4+6a5x5+a6x6+5x+30ax2+75x3a2+100x4a3+75x5a4+30x6a5+5x7a6+10x2+60ax3+150x4a2+200x5a3+150x6a4+60x7a5+10x8a6+10x3(1+ax)6+5x4(1+ax)6+x5(1+ax)6
10x3(1+ax)6הרחב את:10x3+60ax4+150x5a2+200x6a3+150x7a4+60x8a5+10x9a6
=1+6ax+15a2x2+20a3x3+15a4x4+6a5x5+a6x6+5x+30ax2+75x3a2+100x4a3+75x5a4+30x6a5+5x7a6+10x2+60ax3+150x4a2+200x5a3+150x6a4+60x7a5+10x8a6+10x3+60ax4+150x5a2+200x6a3+150x7a4+60x8a5+10x9a6+5x4(1+ax)6+x5(1+ax)6
5x4(1+ax)6הרחב את:5x4+30ax5+75x6a2+100x7a3+75x8a4+30x9a5+5x10a6
=1+6ax+15a2x2+20a3x3+15a4x4+6a5x5+a6x6+5x+30ax2+75x3a2+100x4a3+75x5a4+30x6a5+5x7a6+10x2+60ax3+150x4a2+200x5a3+150x6a4+60x7a5+10x8a6+10x3+60ax4+150x5a2+200x6a3+150x7a4+60x8a5+10x9a6+5x4+30ax5+75x6a2+100x7a3+75x8a4+30x9a5+5x10a6+x5(1+ax)6
x5(1+ax)6הרחב את:x5+6ax6+15x7a2+20x8a3+15x9a4+6x10a5+x11a6
=1+6ax+15a2x2+20a3x3+15a4x4+6a5x5+a6x6+5x+30ax2+75x3a2+100x4a3+75x5a4+30x6a5+5x7a6+10x2+60ax3+150x4a2+200x5a3+150x6a4+60x7a5+10x8a6+10x3+60ax4+150x5a2+200x6a3+150x7a4+60x8a5+10x9a6+5x4+30ax5+75x6a2+100x7a3+75x8a4+30x9a5+5x10a6+x5+6ax6+15x7a2+20x8a3+15x9a4+6x10a5+x11a6