amandaestrada03 amandaestrada03

09-03-2020
Mathematics

contestada

simplify the given polynomial and use it to complete the statement. (8x2-5x-7)-(9x2-3x-5)+(x+7)(x+1)

Respuesta :

miljanamilovanovic12 miljanamilovanovic12

09-03-2020

Answer:

6x+5

Step-by-step explanation:

(8x^2-5x-7)-(9x^2-3x-5)+(x+7)(x+1)=

8x^2-5x-7-9x^2+3x+5+x*x+x*1+7*x+7*1=

-x^2 - 2x-2+x^2 +x+7x+7=

-2x-2+8x+7=6x+5

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