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a fost răspuns

Efectueaza ridicarile la patrat:
a)(x+y+z)²
b)(x-y+z)²
c)(x-y-z)²
d)(2a-3b+c)²
e)(a-1,8b-c)²
f)(1,9a+b-c)²
g)(a+3b+1,6c)²
h)(5a+9b+1,8c)²
i)(1,7a-b-c)²
j)(2a+b+1,5c)²
k)(√2a-b)(√2a+b)
l)(a-b√3-c√5)²

Răspuns :

Miha1107
a)x²+y²+z²+2xy+2xz+2zy
b)x²+y²+z²-2xy+2xz-2yz
c)x²+y²+z²-2xy-2xz+2yz
d)4a²+9b²+c²-12ab+4ac-6bc
e)a²+3,24b²+c²-3,6ab+3,6bc-2ac
f)3,61a²+b²+c²+3,8ab-3,8ac-2bc
g)a²+3b²2,56c²+6ab+9,6bc+3,2ac
h)25a²+81b²+3,24c²+90ab+18ac+32,4bc
i)2,89a²+b²+c²-3,4ab-3,4ac+2bc
j)4a²+b²+2,25c²+4ab+6ac++3bc
k)2a²-b²
l)a²+3b²+5c²-2ab√3-2ac√5+2bc√15