Grade 11Algebra
given cubic equations x³-2kx²-4kx+k²=0 . if the root of the equations is less than 1, the other root is in the interval (1,4) and the 3rd root is greater than 4 then value of k lies in the interval (a+✓b,b(a+✓b) where a,b range of N . the valur of (a+b)³+(ab+2)² equal
