Question

ayuda es difícil es de matemática
1) (X + 6)^2
2) (2X + 1)^2 =
3) (5X^3+ 4)^2 =
4) (X – 7)^2 =
5) (X- 1)^2 =
6) (3X- a)^2 =
7) (X + 5)∙(X-5) =
8) (3X + 2)∙(3X – 2) =
9) (X^2 + 6)∙(X^2 - 6) =

Answer 1

Respuesta:

1. (x+6)² = x²+2(x)(6)+(6)² = x² + 12x + 36

2. (2x+1)² = (2x)² + 2(2x)(1) + ( 1)² = 4x² + 4x + 1

3. (5x³+4)² = (5x³ ) ² + 2(5x³)(4) + ( 4 ) ² = 25x⁶ + 40x³ + 16

4. (x-7)²= (x)² - 2(x)(7) + ( 7)² = x² - 14x + 49

5. (x-1)²= (x)² - 2(x)(1) + (1)² = x² - 2x + 1

6. (3x-a)² = (3x)² - 2(3x)(a) + (a)² = 9x² - 6ax + a²

7. (x+5)×(x-5)= x²-5x+5x-25 = (x²-25)

8. (3x+2)×(3x-2)= 9x²-6x+6x-4= (9x²-4)

9. (x²+6)×(x²-6)= x⁴-6x²+6x²-36 =(x⁴-36)