Question

rezolvarea as vrea sa fie pe foaie ,,



dau coroana si 5 stele !!​

Answer 1

Răspuns:

a)(x-2)²+2(x-2)+1=(x-2+1)²=(x-1)²

b)(m+5)²-4(m+5)+4=(m+5-2)²=(m+3)²

c)(x+3)²-2(x+3)(x-1)+(x-1)²=[x+3-(x-1)]²=(x+3-x+1)²=4²=16

d)9x⁴y²z²+24x²yz+16=(3x²yz)²+2×3x²yz×4+4²=(3x²yz+4)²

e)4(x-2)²-12(x-2)+9=[2(x-2)-3]²=(2x-4-3)²=(2x-7)²