पुढील उपप्रशन सोडवा.
3x2-4x-7=0 यावरून b आणि c च्या किंमती काढा.गणित भाग 1 उत्तर
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- 3x² - 4x - 7 = 0
- 3x² - (7-3)x - 7 = 0
- 3x² - 7x + 3x - 7 = 0
- 3x² + 3x - 7x - 7 = 0
- 3x(x+1) - 7(x+1) = 0
- (x+1) (3x-7) = 0
- Case 1
- x + 1 = 0
- x = -1
- then ,
- Case 2
- 3x-7 = 0
- 3x = 7
- x = 7/3
- Zeros are 7/3 and -1
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