Subtract -5y2 from y2

-5 is the answer

Step-by-step explanation:

-5y2 - y2 is 0 only subtracting the y2 and the 5 stays because there's nothing to subtract it by if both -y2 - y2 equal 0 so the only thing left is -5 your answer.

so is 5y2 + y2? then is 5y4 - y2 plus 2 from 5y2 is 6y2 or 7y2

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.

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step-by-step explanation: