I’ve been stuck on this khan for hours already can’t seem to figure it out, it’s just adding and subtracting polynomials but it’s supposed to equal a polynomial in standard form :( please help me !!

Step-by-step explanation:

 polynomial is said to be in its standard form, if it is expressed in such a way that the term with the highest degree is placed first, followed by the term which has the next highest degree, and so on. You can observe that in this standard form of a polynomial, the exponents are placed in descending order.

here you hope this .

step-by-step explanation:

hypotenuse = √(15² + 8²)

=  √(225 +64)

=  √(289) = 17

sin(x) = cos(y) = 8/17

they are identical so long as you are doing the sine of one angle and the cosine of the only other angle that isn't the right angle.