Question

4) If one of the factor of X2 + X - 20 is (X +5), find the other factor.
​

Answer 1

Answer:

$The \: \: other \: \: factor \: \: is \: \: (x - 4)$

Step-by-step explanation:

${x}^{2} + x - 20 \\ {x}^{2} + 5x - 4x - 20 \\ x(x + 5) - 4(x + 5) \\ (x + 5)(x - 4)$