2006-11-16 13:43:55 · 6 answers · asked by sunoje2000 2 in Science & Mathematics ➔ Mathematics
(x+2)(x²-2x+4) is the correct answer. It expands to x³ + 8.
(x+2)³, while tempting, is NOT the correct answer; its expansion is x³ + 6x² +12x + 8, NOT x³ + 8.
2006-11-16 13:50:20 · answer #1 · answered by Anonymous · 0⤊ 0⤋
8 is actually 2 cubed (2 to the third power)
2006-11-16 13:46:03 · answer #2 · answered by Ken K 1 · 0⤊ 0⤋
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2016-12-17 11:27:04 · answer #3 · answered by Anonymous · 0⤊ 0⤋
(x+2) all to the third
2006-11-16 13:47:14 · answer #4 · answered by sandyscheeks 2 · 0⤊ 0⤋
In general X^3 + N^3 = (X+N)(X^2+NX+N^2)
Since in your case N=2, just plug-n-crunch.
2006-11-16 14:31:21 · answer #5 · answered by davidosterberg1 6 · 0⤊ 0⤋
it is x^3 + 2^3
= (x+2)(x^2-2x+4) if you do not allow complex numbers
= (x+2)(x+2w)(x+2w^2) if you allow complex number w = cube root of 1
2006-11-16 14:38:43 · answer #6 · answered by Mein Hoon Na 7 · 0⤊ 0⤋