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Find all of the actual roots of the polynomial: x^3 - 2x^2 + 5x + 26 = 0? Is there a musical term for two independent, non-complementary, parts being played simultaneously? What about for three parts? If a+b+c=4, ab+ac+bc=6, and abc=3, what is 1/a + 1/b + 1/c? Could someone help me with these math problems? I can't figure them out. Solve the linear equation;
x+2y=15
y=-2x+0 9x-12y=-3
-12x+16y=4? What is 4 x 6?