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Find the value of “x” in the polynomial 2a 2 + 2xa + 5a + 10 if (a + x) is one of its factors. Find the value of “x” in the polynomial 2a2 + 2xa + 5a + 10 if (a + x) is one of its factors.
Find the value of “x” in the polynomial 2a2 + 2xa + 5a + 10 if (a + x) is one of its factors.
Dear StudentSay, f(a) = 2a^2+ 2xa + 5a + 10Since, (a + x) is a factor of 2a^2+ 2xa + 5a + 10,f(-x) = 0So, f(-x) = 2x^2– 2x^2– 5x + 10 = 0Or, -5x + 10 = 0Thus, x = 2Thanks
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