Por favor ayuda no entiendocon procedimientos?

1. (x + 4)² = x² + 2(x)(4) + 4² =

4.

(p + 5q)² = p² + 2(p)(5q) + 5q² =

7.

(5x + 3y)² = 5x² + 2(5x)(3y) + 3y² =

10.

(6x - 5y)² = 6x² - 2(6x)(5y) + 5y² =

2.

(3x + 2)² = 3x² + 2(3x)(2) + 2² =

5.

(a + 2b)² = a² + 2(a)(2b) + 2b² =

8.

(a - 3b)² = a² - 2(a)(3b) + 3b² =

11.

(x² - 5)² = x⁴ - 2(x²)(5) + 5² =

3.

(a + 1)² = a² + 2(a)(1) + 1² =

6.

(x - 5)² = x² + 2(x)(5) + 5² =

9.

(6 - x)² = 6² - 2(6)(x) + x² =

12.

(3a² + x²)² = 3a⁴ - 2(3a²)(x²) + x⁴ =.