SOLJU1999
Answered

(x+4)au carré +(x-5)au carré = ? aider moi svp je suis bloqué

Sagot :

(x+4)² +(x-5)²
=x²+8x+16+x²-10x+25
=2x²-2x+41
(x+4)²+(x-5)²=
(x²+8x+16)+(x²-10x+25)=
x²+8x+16+x²-10x+25=
2x²-2x+41