document.write( "Question 169876: I looked at all the answers and still cannot figure it out. The question is:\r
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document.write( "Given the function f(x) = x^2 + 3x + 4 , find the value of f(–1). So, I think I am lost. I did it like this:
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document.write( "fx=x^2+3x+3
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document.write( "fx-2^2-3x-3=0
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document.write( "x=0\r
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document.write( "However, that is not the answer. The answer is supposed to be f(–1) = 2. \r
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document.write( "I would appreciate it if you would show me how to resolve this. Thank you.
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Algebra.Com's Answer #125294 by chiefman(11)![]() ![]() You can put this solution on YOUR website! f(x)=x^2+3x+4 evaluating f(-1) wehave \n" ); document.write( "f(-1)=(-1)^2+3(-1)+4 ie you equate x with -1 \n" ); document.write( "this gives \n" ); document.write( " =1+(-3)+4 \n" ); document.write( " =2 \n" ); document.write( "hence f(-1) is 2 \n" ); document.write( " |