3 years ago

Solve the quadratic equation below by completing the square

Mathematics

2 answers:

tia_tia [17]3 years ago

6 0

Answer:

n = -5/2 and n = 13/2

seraphim [82]3 years ago

5 0

Step-by-step explanation:

4·n^2 - 16·n - 21 = 44

4·n^2 - 16·n = 65

n^2 - 4·n = 65/4

n^2 - 4·n + 4 = 65/4 + 4

(n - 2)^2 = 81/4

n - 2 = ± 9/2

n = 2 ± 4.5

n1 = -2.5 or n2 = 6.5

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