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Sever21 [200]
3 years ago
10

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

Mathematics
2 answers:
Ugo [173]3 years ago
8 0

Answer:

x = 2

x = -21

Step-by-step explanation:

Mrac [35]3 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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3 years ago
Michael's dad is 30 years of age. He is 2 years more than four times Michaels age m. Write and solve a two-step equation to dete
Ksenya-84 [330]

Answer:

The two step equation that we can use to find michael's age is x = (f-2)/4 where f = 30. So Michael is 7 years old.

Step-by-step explanation:

In order to solve this problem we will attribute variables to the ages of Michael and his father. For his father age we will attribute a variable called "f" and for Michael's age we will attribute a variable called "x". The first information that the problem gives us is that Michael's dad is 30 years of age, so we have:

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7 0
3 years ago
Read 2 more answers
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Inga [223]

Answer:

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Step-by-step explanation:

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We can re-write the answer as:

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Answer:

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3 years ago
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