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Can you use the 31 dominos to cover the entire board?

Answer 1



Secondary School

Math

5 points

By the method of completing the square show that the equation 4x square + 3 X + 5 =0 has no real roots

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 by K4birr 27 minutes ago

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ignitedlearner

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4x²+3x+5 = 0

add and subtract 9/16

4x²+3x +(9/16)+5-(9/16)= 0

(2x+(3/4))² +71/16= 0

(2x+(3/4))² = -71/16

since square of any real number can not be negative thus the equation have no real roots