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algebra

posted by on .

can someone tell me if i did the problem correct (solve by completing the square) 4x^2+2x-3=0
x^2+(1/2)=3/4
x^2+(1/2)+(1/4)^2=3/4+(1/4)^2
(x+1/4)^2=13/16
x+1/4=+-sqrt 13/16
x+1/4=+-sqrt 13/4
x=-1/4+-sqrt 13/4
x=-1+-sqrt 13/4

  • algebra - ,

    x^2+(1/2)=3/4 should say

    x^2+(1/2x)=3/4 also in the line that follows that you left out the x in the second term

    to avoid problems with order of operation, write your final answer this way

    x=(-1+-sqrt 13)/4 the way you have it only the square root term would be divided by 4

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