Question

in
Find the value of a if (x+a) is a
factor of x3 + ax ²- 2x + a +4.​

Answer 1

Answer:

putting x=–a

${( - a)}^{3} + a \times {( - a)}^{2} - 2 \times ( - a) + a + 4 = 0 \\ - {a}^{3} + {a}^{3} + 2a + a + 4 = 0 \\ 3a = - 4 \\ a = - \frac{4}{3} \: \: ans.$