2007-01-26 12:59:42 · 7 answers · asked by starshunda 1 in Science & Mathematics ➔ Mathematics
*This expression is the differences of cubes & the formula is...
(a - b)(a^2 + ab + b^2)
First: write the expression in lowest terms...
(b)(b)(b) - (2)(2)(2)
Sec: you need a term for the "a" and "b" variable in the formula >
"a" = b and "b" = 2
Third: place the terms in the corresponding variables...
(b - 2)(b^2 + b(2) + 2^2)
(b - 2)(b^2 + 2b + (2)(2))
(b - 2)(b^2 + 2b + 4)
2007-01-26 14:54:13 · answer #1 · answered by ♪♥Annie♥♪ 6 · 0⤊ 0⤋
b^3 - 8 = (b - 2)(b^2 + 2b + 4)
2007-01-26 22:31:25 · answer #2 · answered by Sherman81 6 · 0⤊ 0⤋
It is 0
b^3-8=0
b^3=8
b=2
2007-01-26 21:04:37 · answer #3 · answered by Anonymous · 0⤊ 1⤋
Not enough info given to solve for the answer.
2007-01-26 21:08:27 · answer #4 · answered by erbelgerbels 2 · 0⤊ 1⤋
b³ = 8
b = ³\/8
b = ³\/2³
b = 2
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2007-01-26 21:09:36 · answer #5 · answered by aeiou 7 · 0⤊ 1⤋
cube root of eight
2007-01-26 21:04:14 · answer #6 · answered by Phillip 4 · 0⤊ 2⤋
you need to know what goes in place of 'what'. if it's zero, b=2
2007-01-26 21:07:35 · answer #7 · answered by Spearfish 5 · 0⤊ 1⤋