When adding √16 and -8 which type of number is the sum? which is integer but someone please tell me why its an integer

You may notice that (2−√5)(2+√5)=−1, hence the given number is α−1α with α being a root of p(x)=(x3−2)2−5=x6−4x3−1.

Step-by-step explanation:

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step-by-step explanation:

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus