Find the value of ? in the polynomial 2?2 + 2?? + 5? + 10 if (? + ?) is one of its factors.

Find the value of ? in the polynomial 2?2 + 2?? + 5? + 10 if (? + ?) i

1.	Find the value of ? in the polynomial 2?2 + 2?? + 5? + 10 if (? + ?) is one of its factors.
Answer» Thanks for your answer? Let f(a) = 2a2\xa0+ 2xa + 5x + 10As (a + x) is a factor of 2a2\xa0+ 2xa + 5x + 10, f(-x) = 0So, f(-x) = 2x2\xa0– 2x2\xa0– 5x + 10 = 0Or, -5x + 10 = 0Thus, x = 2