If x+a is factor of 2x2+2ax+5x+10, …
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Yogita Ingle 5 years, 3 months ago
x + a is factor x = -a
2x2 + 2ax + 5x + 10 =0
2(-a)2 + 2 a(-a) + 5(-a) + 10 = 0
2a2 - 2a2 - 5a + 10 = 0
- 5a + 10 = 0
- 5a = -10
a = 10/5
a = 2
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