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If (x + a) is a factor of the polynomial 2x2 + 2ax + 5x + 10, find the value of a. |
Answer» Given: (x + a) is a factor of polynomial 2x2 + 2ax + 5x + 10. So, we have x + a = 0 or x = –a , will satisfy the given polynomial. Therefore, we will have 2 (–a)2 + 2a(–a) + 5(–a) + 10 = 0 2a2 –2a2 – 5a + 10 = 0 – 5a = – 10 a = 2 The value of a is 2. |
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