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viva [34]
3 years ago
14

Will the difference of two rational numbers be always rational

Mathematics
1 answer:
spayn [35]3 years ago
7 0

Since ad, bc, and bd are integers since integers are closed under the operation of multiplication and ad-bc is an integer since integers are closed under the operation of subtraction, then (ad-bc)/bd is a rational number since it is in the form of 1 integer divided by another and the denominator is not eqaul to 0

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asambeis [7]

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Step-by-step explanation:

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Is the open sentence 8 - 4x = 4x true or false when x=0
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devlian [24]

Answer:

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3 years ago
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solmaris [256]
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I am assuming that you meant   </span>35x^2 + 12x − 36 = 0.

If that is indeed the case, then a = 35, b = 12 and c = -36

and the discriminant is b^2 - 4ac, or (12)^2 - 4(35)(-36) = 5184.

Since the discriminant is positive, this equation has 2 real, unequal solutions.  They are
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x = -----------------------------------------
                         2(35)
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