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Illusion [34]
3 years ago
14

Solve this quadratic equation using the quadratic formula. 5 - 10x - 3x2 = 0

Mathematics
2 answers:
boyakko [2]3 years ago
5 0

Step-by-step explanation:

5 - 10x - 3 \times 2 = 0

multiply \: the \: numbers \\  \\ 5 - 10 x- 6 = 0

collect \: like \: terms \\  \\ 5  - 6 - 10x

- 1 - 10x = 0

- 10x = 1

divide \: both \: sides \: of \: the \: equation \: by \:  - 10

x =  -  \ \frac{1}{10}

alt \: form \:  =  \\  \\  =  0.1 \\   x =  - 10 {}^{ - 1}

Hope this helps. :)

horsena [70]3 years ago
4 0

Answer:

x = (-5 ± 2√10) / 3

Step-by-step explanation:

5 − 10x − 3x² = 0

Write in standard form:

-3x² − 10x + 5 = 0

Solve with quadratic formula:

x = [ -b ± √(b² − 4ac) ] / 2a

x = [ -(-10) ± √((-10)² − 4(-3)(5)) ] / 2(-3)

x = [ 10 ± √(100 + 60) ] / -6

x = (10 ± 4√10) / -6

x = (-5 ± 2√10) / 3

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