Question

dados os polonios 3x+2x-4 ​

Answer 1

A=3x²+2x–4

B=5x–3

C=2x+5

A+B=(3x²+2x–4)+(5x–3)

A+B= 3x²+2x–4+5x–3=3x²+7x–7

C+A=(2x+5)+(3x²+2x–4)

C+A=2x+5+3x²+2x–4=3x²+4x+1

C+B=(5x–3)+(2x+5)

C+B=5x–3+2x+5

C+B=7x+2