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Question
Hi- I am wondering if you would be able to help me with the following problems. I kind of get the basics but then mess up. If you would be able to explain the steps taken to complete the question it would be greatly appreciated!

1) P(x)=x^3+4x^2-8x-6; a=-2
2) P(x)=x^3-7x^2+15x-9; a=3
3) P(x)=6x^3-x^2+4x+3; a=3
4) P(x)=2x^3+4x^2-10x-9; a=3

Thanks Again!

Answer
It would appear that we are asked to find P(a) for each problem.
To do this, put in the value of a for x.

Using -2=4, -2=-8, 3=9, and 3=27 gives ...

1) P(-2) = -8 + 4*4 -8(-2) - 6 = -8 + 16 + 16 - 6 = 18;
2) P(3) = 27 - 7*9 + 15*3 - 9 = 27 - 63 + 45 - 9 = 0;
3) P(3) = 6*27 - 9 + 4*3 + 3 = 162 - 9 + 12 + 3 = 168; and
4) P(3) = 2*27 + 4*9 - 10*3 - 9 = 54 + 36 - 30 - 9 = 51.

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Scott A Wilson

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