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बहुपद 4x3 + 16x2 – x + 5 से क्या घटाया जाये कि ऐसा बहुपद प्राप्त हो जो (x + 5) से पूर्णतया विभाजित हो?

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यदि (x + 5) से 4x3 + 16x2 – x + 5 को पूर्णतया विभाजित किया जाए तो

x + 5 = 0 या x = 0 – 5 = -5 रखने पर

शेषफल = 4(-5)3 + 16(-5)2 – (-5) + 5

= 4(-125) + 16(25) + 5 + 5

= -500 + 400 + 10 = -90

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