christinamflores2128 christinamflores2128

21-03-2024
Mathematics

contestada

What is the missing polynomial? _-(20-4x-5x^2)=20-7x^2

Respuesta :

palvirajput8427 palvirajput8427

21-03-2024

Answer:

Step-by-step explanation:

-(20-4x-5x^2)=20-7x^2

-20+4x+5x^2=20-7x^2

12x^2+4x-40=0

4(3x^2+x-10)=0

3x^2+x-10=0

3x^2+ 6x-5x-10=0

3x(x+2)-5(x+2)=0

(x+2)(3x-5) =0

x= -2,5/3

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