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Anonimaanonimul
a fost răspuns

(a-3)²=
(3-x)²=
(x+a)²=
(4+a)²=
(3a+5b)²=
(√3x+√2x)²=
(√3+3b)²=
(X+y)(x-y)=
(8-a)(8+a)=
(c-b)(c+b)=
(y-√3)(y+√3)=
(X+4)(x-4)=
(√7-x)(√7+x)=

Răspuns :

Danaradu70
Folosesti formulele (a-b)^2=a^2-2ab+b^2
                                (a+b)^2=a^2+2ab+b^2
                                (a+b)(a-b)=a^2-b^2

1. a^2-6a+9
2. 9-6x+x^2
3. x^2+2ax+a^2
4. 16_8a+a^2
5. 9a^2+30ab_25b^2
6.3x+2V6x+2x=5x+2V6x
7. 3+6V3b+9b^2
8. x^2-y^2
9. c^2-b^2
10. y^2-3
11. x^2-16
12. 7-x^2

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