What is the sum of the polynomials? (8x^2-9x^2-4x)+(x^2-3y^2-7x)

The sum of the polynomials is -11x - 3y^2.

In order to find this we must first collect all like terms. To start, we'll begin with all x^2 terms.

8x^2 - 9x^2 + x^2 = 0

Since these all cancel, we're left with no x^2 term. Next we'll do x terms.

-4x - 7x = -11x

The only thing left is -3y^2, which has no alike term. so we just include that in there.

-11x - 3y^2

#15. square

step-by-step explanation:

because quadrilatural (idk how to spell it) means somthing that is not 3d or like, equal sides (or somthing like that   you know what i meanz)

hope this halps!

bai!

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.