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3 years ago

6) If a and b are natural numbers, then which of the following must also be a natural number?

Mathematics

1 answer:

valkas [14]3 years ago

8 0

A - b is NOT always natural. Eg 4 - 7 = -3 therefore not in the natural number set.

ab is always natural

a/b is NOT always natural. Eg 4/7

So the answer to the question is (b) only II must be a natural number answer.

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Answer:

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Step-by-step explanation:

x^2=a

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Plug into formula.

Equation: $\frac{9+-\sqrt{(-9)^2-4(1)(3)}}{2}$

Simplify the equation.

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Subtract 81 and 12.

Equation: $\frac{9+-\sqrt{69}}{2}$

Spit into two equations

Equation 1: $\frac{9+\sqrt{69}}{2}$

Equation 2: $\frac{9-\sqrt{69}}{2}$

Hope this helps!

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3 years ago

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Answer:

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3 years ago

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