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transform into a quadratic equation and solve for it's solution x ( x - 5) = 2 ​

Sagot :

Answer:

1and7

Step-by-step explanation:

x=1

x=7

1(7-5)=2

correct

Step-by-step explanation:

[tex]x {}^{2} - 5x = 2[/tex]

[tex]x {}^{2} - 5x - 2 = 0[/tex]

[tex]x = \frac{ - ( - 5) \frac{ + }{} \sqrt{( - 5) {}^{2} - 4 \times 1 \times ( - 2) } }{2 \times 1} [/tex]

[tex]x = \frac{5 \frac{ + }{} \sqrt{25 + 8} }{2} [/tex]

[tex]x = \frac{5 \frac{ + }{} \sqrt{33} }{2} [/tex]

[tex]x = \frac{5 + {} \sqrt{33} }{2} \\ x = \frac{5 - \sqrt{33} }{2} [/tex]

[tex]x1 = \frac{5 - \sqrt{33} }{2} \\ x2 = \frac{5 + \sqrt{33} }{2} [/tex]

Alternate form:

x1 -0.372281

x2 5.37228