document.write( "Question 135335: Please help me solve the following questions.\r
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document.write( "Question1.\r
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document.write( "If (x-k) is a factor of the polynomial f(x) = 4x3 – (3k + 2)x2 – (k2 - 1)x + 3, where k is a constant, find the possible values of k.\r
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document.write( "Question2.\r
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document.write( "A polynomial p(x) is of the form p(x) = ax2 + bx + c , where a, b, c, m, and k are mx + k constants. If the truth set of p(x) = 0 is {1, 2} find the values of a, b and c.\r
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document.write( "Question3.\r
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document.write( "Find all the possible solutions of x in the equation x3 + 27 = 0, where x is a complex number.\r
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document.write( "Question5.\r
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document.write( "7. (i) Given the complex numbers z1 = 3i; z2 = 2 + 4i; z3 = 5 – 3i.
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document.write( "Express z1z2 + z2z3 + z3z1 , in the form x + iy where x and y are real numbers.
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document.write( " z1 + z2 + z3
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document.write( " (ii) Given that cos5Ө + isinӨ equals (cos5Ө + isinӨ)5, show that
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document.write( " sin5Ө = 16cos4Ө - 12cos2Ө + 1, where Ө is real and is not an integral multiples of π.
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document.write( " sinӨ\r
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Algebra.Com's Answer #99160 by Nate(3500)![]() ![]() ![]() You can put this solution on YOUR website! Use synthetic division. At the end, you get k - 2k^2 and 3 ... These must sum to zero for x - k to be a factor. \n" ); document.write( "3 + k - 2k^2 = 0 \n" ); document.write( "(3 - 2k)(1 + k) = 0 \n" ); document.write( "3 - 2k = 0 and 1 + k = 0 \n" ); document.write( "3/2 = k and k = -1\r \n" ); document.write( "\n" ); document.write( "You would have to explain question (2) better.\r \n" ); document.write( "\n" ); document.write( "x^3 = -27 \n" ); document.write( "x = -3 .. no complex values unless 0i - 3\r \n" ); document.write( "\n" ); document.write( "Just multiply those out for (5)\r \n" ); document.write( "\n" ); document.write( "I think Euler's equation might help for (ii) or the precalc version. It's been a long time since that. \n" ); document.write( " |