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ICSE Class 10 Answered

(x-1)^2-3x+4=0 find value of x  
Asked by mirinilton | 07 Mar, 2019, 07:44: PM
answered-by-expert Expert Answer
begin mathsize 12px style open parentheses space x space minus space 1 close parentheses squared space minus 3 x space plus 4 space equals space 0
x squared space minus 2 x space plus 1 space minus 3 x space plus 4 space equals space 0
x squared space minus 5 x space plus space 5 space equals 0

x space equals space fraction numerator 5 plus-or-minus square root of 25 minus 20 end root over denominator 2 end fraction space equals space fraction numerator 5 plus-or-minus square root of 5 over denominator 2 end fraction end style
Answered by Thiyagarajan K | 07 Mar, 2019, 11:27: PM
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