Question

binomio al cuadrado
ayuda​

Answer 1

Explicación paso a paso:

1.

(x + 3)²

= x² + 2(x)(3) + 3²

= x² + 6x + 9

2.

(2x - 3)²

= (2x)² - 2(2x)(3) + 3²

= 4x² - 12x + 9

3.

(-2x² + 3)²

= (-2x²)² + 2(-2x²)(3) + 3²

= 4x⁴ - 12x² + 9

4.

(2x² + 3y)²

= (2x²)² + 2(2x²)(3y) + (3y)²

= 4x⁴ + 12x²y + 9y²

5.

-(3x - 4n)²

= -[(3x)² - 2(3x)(4n) + (4n)²]

= -[9x² - 24xn + 16n²]

= -9x² + 24xn - 16n²

6.

-(5x + 3m)²

= -[(5x)² + 2(5x)(3m) + (3m)²]

= -[25x² + 30xm + 9m²]

= -25x² - 30xm - 9m²

7.

-(2x – 5d)²

= -[(2x)² - 2(2x)(5d) + (5d)²]

= -[4x² - 20xd + 25d²]

= -4x² + 20xd - 25d²