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Cine ma poate ajuta si pe mine la exercitiile 5A si 6A? (formule de calcul prescurtat)
5A.
1. 9x²-24x+16=
2. 25x²+60x+36
3. 4x²+28x+49
4. 25+70x+49x²
5. 16x²-40x+25
6. 9x²+42x+49
7. 25x²-30xy+9y²
8. 25x²-40xy+16y²
9, 36x²-24xy+4y²



6A
1. 25x²-16
2. 4x²-49
3. 25a²-121b²
4. 64x²-81y²
5. 100a²-81b²
6. 144-25x²
7.36x²-49y²
8. 49x²-169
9. 81x²-196

VA ROG E URGENT

Răspuns :

Slavitescudoraask

5A

1. (3x-4)²

2. (5x+6)²

3. (2x+7)²

4. (7x+5)²

5. (4x-5)²

6. (3x+7)²

7. (5x+3y)²

8. (5x-4y)²

9. (6x-2y)²

6A

1. (5x-4)(5x+4)

2. (2x-7)(2x+7)

3. (5a-11b)(5a+11b)

4. (8x-9y)(8x+9y)

5. (10a-9b)(1a+b9b)

6. (12-5x)(12+5x)

7. (6x-7y)(6x+7y)

8. (7x-13)(7x+13)

9. (9x-14)(9x+14)

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