a3ï¿ b3
a3 - b3µÈÓÚʲô?
a3-b3=(a-b)(a2+ab+b2)¡£Á½ÊýµÄƽ·½ºÍ¼ÓÉÏÁ½ÊýµÄ»ýÔÙ³ËÒÔÁ½ÊýµÄ²î£¬ËùµÃµ½µÄ»ý¾ÍµÈÓÚÁ½ÊýµÄÁ¢·½²î¡£Óù«Ê½±í´ï¼´£ºa3-b3=(a-b)(...
a3 - b3¹«Ê½ÊÇʲô?
£¨a-b£©^3=a^3-3(a^2)b+3a¡Áb^2-b^3 ËùÒÔa^3-b^ =£¨a-b£©^3-[-3(a^2)b+3a¡Áb^2]=£¨a-b£©(a-b)^2+3ab(a-b...
b3Ö½ºÍa3Ö½Äĸö´ó ¨C ÊÖ»ú°®ÎÊ
a3Ö½,Ò²½Ð´ó¶È8kÖ½,ÊÇ´ó¶ÈÖ½(1194ºÁÃסÁ889ºÁÃ×)µÄ°Ë·ÖÖ®Ò»,b3Ö½,Ò²½ÐÕý¶È8kÖ½,ÊÇÕý¶ÈÖ½(1092ºÁÃסÁ787ºÁÃ×)µÄ°Ë·ÖÖ®Ò»¡£a3Ö½ºÍb3Ö½¶¼ÊÇÖ½Õų¤¿í³ß´ç²»Í¬µÄÁ½¸ö¹æ¸ñ,a3Êǹú...
Ò»µÀÊýѧÌâa3 - b3ºÍa3+b3µÄ¹«Ê½·Ö±ðÊÇʲô?ÈçºÎÍƵ¼µÄ...
a3-b3=a*a^-b*b^+ab^+2a^b-ab^-2a^b=a(a^+b^+2ab)-b(b^+ab+2a^)=a(a+b)^-b(b^+2ab+a^+a^-ab)=a(a+b)^-b(a+b)^-b(a^-ab)=(a...
a3 - b3Á¢·½²î¹«Ê½
a3-b3Á¢·½²î¹«Ê½ÊÇ£ºa^3-b^3 = £¨a-b£©£¨a^2+ab+b^2£©¡£Á½ÊýµÄƽ·½ºÍ¼ÓÉÏÁ½ÊýµÄ»ýÔÙ³ËÒÔÁ½ÊýµÄ²î£¬ËùµÃµ½µÄ»ý¾ÍµÈÓÚÁ½ÊýµÄÁ¢·½...
Ò»¸öÁ¢·½¹«Ê½µÄÎÊÌâa3+b3=?a3 - b3=?Á½¸öÁ¢·½¹«Ê½ÍüÁË...
a3+b3=(a+b)(a^2-ab+b^2)a3-b3=(a-b)(a^2+ab+b^2)
a3+b3¹«Ê½
Òòʽ·Ö½âa3+b3¹«Ê½=(a-b)(a2+ab+b2)¡£°ÑÒ»¸ö¶àÏîʽ»¯Îª¼¸¸ö×î¼òÕûʽµÄ³Ë»ýµÄÐÎʽ£¬ÕâÖÖ±äÐνÐ×ö°ÑÕâ¸öÒòʽ·Ö½â£¨Ò²½Ð×÷·Ö½âÒòʽ£©£¬ËüÊÇ...
a3+b3µÈÓÚ¶àÉÙ,ÊÇaµÄÈý´Î·½¼ÓbµÄÈý´Î·½
a^3+b^3=(a+b)(a^2-ab+b^2)