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CBSE Class 10 Answered

x²-4x-6 what is the answer
Asked by pranavtamboli65 | 09 Jul, 2023, 09:13: PM
answered-by-expert Expert Answer
Let x2 - 4x - 6 = 0
straight x equals fraction numerator negative left parenthesis negative 4 right parenthesis plus-or-minus square root of open parentheses negative 4 close parentheses squared minus 4 open parentheses 1 close parentheses open parentheses negative 6 close parentheses end root over denominator 2 end fraction
equals fraction numerator 4 plus-or-minus square root of 16 plus 24 end root over denominator 2 end fraction
equals fraction numerator 4 plus-or-minus square root of 40 over denominator 2 end fraction
equals fraction numerator 4 plus-or-minus 2 square root of 10 over denominator 2 end fraction
equals 4 plus-or-minus square root of 10
Hence comma space straight x equals 4 plus-or-minus square root of 10
Answered by Renu Varma | 10 Jul, 2023, 09:23: AM

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