Question

por fissss ayudanmennnnnn urgenteeeee

Answer 1

Explicación paso a paso:

4) (5+2n)(5-2n)

(5)² - (2n)²

25-4n²

5)  (4+2n)(4-2n)

(4)² - (2n)²

16 - 4n²

6) (3a+4)²

(3a)²+2(3a)(4)+(4)²

9a² +24a+16

7) (a+2)²

(a)²+2(a)(1)+(2)²

a² +2a + 4

Answer 2

Respuesta:

4.

$(5+2n)(5-2n)=5^2-(2n)^2=25-4n^2$

5.

$(4+2m)(4-2n)=16-8n+8m-4mn$

6.

$(3a+4)^2=(3a)^2+2(3a)(4)+4^2=9a^2+24a+16$

7.

$(a+2)^2=a^2+2(a)(2)+2^2=a^2+4a+4$