Question

ayuda de mate
1.- (×+3)²=
2.- 2×+4)²
3.- (y-1/4)²
4.- (a+1/4)²
5.- (3×+⅔)²​

Answer 1

Explicación paso a paso:

Formula de binomio al  cuadrado:

(a ± b)² = a² ± 2ab + b²

Resolvamos:

1)

(x+3)² = (x)² + 2(x)(3) + (3)²

(x+3)² = x²+6x+9

2)

(2x+4)² = (2x)² + 2(2x)(4) + (4)²

(2x+4)² = 4x²+16x+16

3)

(y-1/4)² = (y)² - 2(y)(1/4) + (1/4)²

(y-1/4)² = y²-2/4y+1/16

(y-1/4)² = y²-1/2y+1/16

4)

(a+1/4)² = (a)² + 2(a)(1/4) + (1/4)²

(a+1/4)² = a²+2/4a+1/16

(a+1/4)² = a²+1/2a+1/16

5)

(3x+2/3)² = (3x)² + 2(3x)(2/3) + (2/3)²

(3x+2/3)² = 9x²+12/3x+4/9

(3x+2/3)² = 9x²+4x+4/9