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timofeeve [1]
4 years ago
5

Solve the following quadratic for the values x

Mathematics
2 answers:
mamaluj [8]4 years ago
8 0

Answer:

x² + 6x - 27 = 0

x² + 9x - 3x - 27 = 0

x ( x + 9 ) - 3 ( x + 9 ) = 0

( x + 9 ) ( x - 3 ) = 0

Thus ,

x = -9 or x = 3

I hope it helps you

#Indian : )

mestny [16]4 years ago
4 0

{x}^{2}  + 6x - 27 = 0 \\ D= {6}^{2}  - 4 \times ( - 27) = 36 + 108 = 144 =  {12}^{2}  \\ x_1= \dfrac{ - 6 + 12}{2}  = 3 \\ x_2= \dfrac{ - 6 - 12}{2}  =  - 9

Answer: x=3; x=-9

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