3 years ago

A triangle has sides with lengths of 5 meters, 12 meters, and 13 meters. Is it a right triangle?

Mathematics

1 answer:

Setler [38]3 years ago

7 0

Answer:

yes :

use the following formula :

a^2 +b^2 = c^2

now apply it to the problem :

5^2+12^2=13^2

do the exponent :

25 + 144 =169

now add

169 =169

if they are equal , then it is a right triangle .

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Given:

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Explanation:

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A polynomial has a as zero if and only if (x -a) is a factor of the polynomial.

Then,

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Then,

$\begin{gathered} f(x)=(x+2)(x-2)(x-4) \\ f(x)=(x^2-2x+2x-4)(x-4) \\ f(x)=(x^2-4)(x-4) \\ f(x)=x^3-4x^2-4x+16 \end{gathered}$

Final answer:

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$f(x)=x^3-4x^2-4x+16$

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