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PLS HELP ASAP x^2 - 4x-1=0 Solve using formula
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9 votes
9 votes
PLS HELP ASAP
x^2 - 4x-1=0
Solve using formula

User Ahmed Yousif
by
2.9k points

2 Answers

20 votes
20 votes

2x ( x - 2x) = 1

2x= 1

x = 0.5

x-2x = 1

-x = 1

x = -1

User Flea Whale
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3.0k points
23 votes
23 votes
X1=2-Square root 5 x2=2+ Square root 5
User Rothloup
by
2.6k points
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