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Math Help - More Help!

  1. #1
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    More Help!

    1.how do you divide x^4-9x^3+25x^2-8x-2 by x^2-2?

    2. Find the value of a for which (1-2a)x^2+5ax+(a-1)(a-8) is divisible by (x-2) but not by (x-1)

    3.i. Prove that the expression x^3+(k-1)x^2+(K-9)x-7 is divisible by x+1 for all values of k

    ii. Find the value of k for which the expression has a remainder of 12 when divided by x-2

    4. The expression 4x^3 +ax^2 -5x +b leaves remainder of -8 and 10 when divided by (2x-3) and (x-3) repectively. Calculate the values of a and b
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  2. #2
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    Quote Originally Posted by chaneliman View Post
    1.how do you divide x^4-9x^3+25x^2-8x-2 by x^2-2?

    2. Find the value of a for which (1-2a)x^2+5ax+(a-1)(a-8) is divisible by (x-2) but not by (x-1)

    3.i. Prove that the expression x^3+(k-1)x^2+(K-9)x-7 is divisible by x+1 for all values of k

    ii. Find the value of k for which the expression has a remainder of 12 when divided by x-2

    4. The expression 4x^3 +ax^2 -5x +b leaves remainder of -8 and 10 when divided by (2x-3) and (x-3) repectively. Calculate the values of a and b
    For 2, 3 and 4 you need to read this first ......

    Now give 2, 3 and 4 another try. If you're still stuck, please say so. But try and be specific on exactly where you're stuck.

    For 1, read this and then this very useful page. Again, If you're still stuck, please say so. But try and be specific on exactly where you're stuck.
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