document.write( "Question 607795: Find all of the zeros of each function f(x)=4x^4+19x^2-63 \n" ); document.write( "
Algebra.Com's Answer #382898 by ewatrrr(24785)\"\" \"About 
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document.write( "Hi
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document.write( "Find all of the zeros of each function:
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document.write( " f(x)=4x^4+19x^2-63 = (4x^2 -9)(x^2 +7) = 0 
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document.write( "(4x^2 -9)=0   x = ±\"3%2F2\"  REAL solution
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document.write( "(x^2 +7) = 0  x = ±i\"sqrt%287%29\"
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document.write( "checking our Factoring Using the FOIL Method
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document.write( "4x^4+19x^2-63 = (4x^2 -9)(x^2 +7)
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document.write( "F	First terms 4x^2
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document.write( "O	Outside terms 28x^2
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document.write( "I	Inside terms  -9x^2
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document.write( "L	Last terms    -63
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