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Use factor theorem, show that (x + √2) is a factor of (2√2x2 + 5x + √2). |
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Answer» Let p(x) = (2√2x2 + 5x + √2) If x + √2 is a factor of p(x), then according to factor theorem p(√2) = 0. p(-√2) = 2√2(-√2)2 + 5(-√2) + √2 = 2√2 x 2 – 5√2 + √2 = 5√2 – 5√2 = 0 p(-√2) = 0 (x + √2) is a factor p(x) i.e. (2√2 x2 + 5x + √2). |
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