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Lemur [1.5K]
3 years ago
11

Find the solution set. x^2+5x-6=0

Mathematics
2 answers:
vladimir2022 [97]3 years ago
6 0
\displaystyle x^2+5x-6=0 \\ \\ \Delta=b^2-4ac\\ \Delta=5^2-4\cdot1\cdot(-6) \\ \Delta=25+24=49 \\ \\ X_{1,2}= \frac{-b \pm \sqrt{\Delta} }{2a} \\ \\ X_1= \frac{-5-7}{2} =  -\frac{12}{2} =-6 \\ \\ X_2= \frac{-5+7}{2}= \frac{2}{2} =1 \\ \\ \text{The solution set: -6 and 1}
olchik [2.2K]3 years ago
3 0
-6 and 1 would be the solution set

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Answer:

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This means that the amount of tax he need to pay is: 3.5% of 1300

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