Question

sendo A=2x³+3x²+14;B=x²-9 e C=4x+12 ,Calcule:
a)A+B
b)A-B
c)AxC

Answer 1

a) 2x³+3x²+14 + x²-9=2x³+4x²+5
b) 2x³+3x²+14 - x²+9= 2x³+2x²+23
c)( 2x³+3x²+14).(4x+12)= 8x⁴+24x³+12x³+36x²+56x+168=8x⁴+36x³+36x²+56x+168