Réponses

2013-05-12T18:57:28+02:00

 a) 7x²+3x-10+2x²-5x-3 = 9x^2-2x-13

 

b) 7+(4x+3-2x²)= 7+4x+3-2x²=-2X^2+4x=10

 

c) 3x-(7x²-6x+2)=3x-7x^2+6x-2=-7x^2+9x-2

 

d) 1-(-x+3)=1+x-3=x-2

2013-05-12T18:59:25+02:00

a) 9x"-2x-13

b)-2x"+4x+10

c)-7x"-3x+2

d)-8-6x+x"