Question

Calcule :
a). ( 3a - 2b + c ) + ( -6a - b - 2c ) + ( 2a + 3b - c )


b). ( 3x² - 3 ) - ( 6x² - 5 )


c). ( 2a - 3ab + 5b ) - ( -a - ab + 2b )

me ajudem por favor !!!

Answer 1

a=0,89972
b=3,21313
c=0,34423