Sagot :
Réponse:
C:
=(−7+4)(−7+4)
=−7(−7+4)+4(−7+4)
=492−28+4(−7+4)
=492−28−28+16
=492−56+16
E:(x-5)²
(x-5)²= x²- 2*x*5+5²
(x-5)²= x²- 2*x*5+5²= x²-10x+25
Réponse:
C:
=(−7+4)(−7+4)
=−7(−7+4)+4(−7+4)
=492−28+4(−7+4)
=492−28−28+16
=492−56+16
E:(x-5)²
(x-5)²= x²- 2*x*5+5²
(x-5)²= x²- 2*x*5+5²= x²-10x+25