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True [87]
3 years ago
12

Use the quadratic formula to solve the quadratic equation x2 − 8x − 4 = 0.

Mathematics
1 answer:
mixas84 [53]3 years ago
4 0
Hello here is a solution :
<span>x² − 8x − 4 = 0.
</span><span>quadratic equation   ax²+bx+c = 0  when :  a=1 and b= -8 and c = -4
discriminant : d = b²-4ac       d= (-8)²-4(1)(-4) =64+16 =70
x= (-b-rot(d))/2a          </span>x'= (-b+rot(d))/2a    .......conrinu
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Answer:

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Step-by-step explanation:

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What segment is congruent to AC?<br> A. BD<br> B. BE<br> C. CE<br> D. none
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You can find the segment congruent to AC by finding another segment with the same length. So first, you need to find the length of AC.

   C - A = AC
0 - (-6) = AC   Cancel out the double negative
  0 + 6 = AC
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Now, find another segment that also has a length of 6.

   D - B = BD
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  2 + 2 = BD
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   E - B = BE
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So, the segment congruent to AC is B. BE . 
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Step-by-step explanation:

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Step-by-step explanation:

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