otorii
Answered

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Solve for X in the equation

x^2 -4x -9 =29·

Sagot :

sharifruha
I don’t know but it seems interesting
s403167

Answer:

x = 8.481 or -4.481

Step-by-step explanation:

x^2 - 4x - 9 = 29

x^2 - 4x - 9 - 29 = 0

x^2 - 4x - 38 = 0

x1  

= −(−4) − √ (−4)2 − 4×1×(−38)  

2×1

= 4 − 2 × √ 42  

2

≈ −4.481

x2  

= −(−4) + √ (−4)2 − 4×1×(−38)  

2×1

= 4 + 2 × √ 42  

2

≈ 8.481

x = 8.481 or -4.481

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