Réponses

2013-11-12T19:46:35+01:00
P=(2a+3)²+(3a-5)²
pour a=2
P=(2*2+3)²+(3*2-5)²
=(4+3)²+(6-5)²
=7²+1²
=49+1
=50

pour a=0
P=(2*0+3)²+(3*0-5)²
=3²+(-5)²
=9+25
=34

pour -3/2
P=(2*3/2+3)²+(3*3/2-5)²
=(6/2+3)²+(9/2-5)²
=(3+3)²+(9/2-10/2)²
=6²+(-1/2)²
=36+1/4
=144/4+1/4
=145/4