Question 1170225
the binomial (x+4) is a factor of the following polynomials, find the value of k.
1.2x^3-3x^2-kx+60
2.7x^2+kx-12
3.kx^3-10x^2-137x+60
4.4x^2+kx-4
5.8x^3+kx^2-53x+12

Find the values of A, B and C if (x-1),(x+2), and (x-2) are factors of 
2Ax^4-Bx^3-Cx-16
<pre>With a factor of the polynomial being x + 4, a zero is - 4.
We then get: {{{highlight(matrix(2,1, matrix(4,3, f(- 4), "=", 2x^3 - 3x^2 - kx + 60, 0, "=", 2(- 4)^3 - 3(- 4)^2 - (- 4)k + 60, 0, "=", - 128 - 48 + 4k + 60, 116, "=", 4k), highlight_green(matrix(1,3, 29, "=", k))))}}}