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Sever21 [200]
2 years ago
10

Completing the square x^2-19x-42=0

Mathematics
2 answers:
Ugo [173]2 years ago
8 0

Answer:

x = 2

x = -21

Step-by-step explanation:

Mrac [35]2 years ago
7 0

Answer:

{x}^{2}  - 19x - 42 = 0 \\  {x}^{2}  + 2x - 21x - 42 = 0 \\ x(x + 2) - 21(x + 2) = 0 \\ (x + 2)(x - 21) = 0 \\  \boxed{x =  - 2} \\  \boxed{x = 21}

<h3>(x+2) and (x-21) is the factors of the x²-19x-42.</h3><h3>Value of x is -2 and 21.</h3>
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