2010 · Q10
If u, v, w are real numbers such that u³ – 8v³ – 27w³ = 18uvw, which one of the following is correct ?
Elementary MathematicsAlgebra
- Au - v + w = 0
- Bu = -v = -w
- Cu - 2v = 3w
- Du + 2v = -3w
Explanation
u³+(-2v)³+(-3w)³=3(u)(-2v)(-3w) gives u-2v-3w=0.