Question

(a+4)²=
(2m+l)²=
(1+3b)²=
porfa ayúdenme hasta mañana temprano porfi​

Answer 1

Respuesta:

${(a + 4)}^{2} = {a}^{2} + 8a + 16$

${(2m + 1)}^{2} = 4 {m}^{2} + 4m + 1$

${(1 + 3b) }^{2} = 9 {b}^{2} + 6 b + 1$

Explicación paso a paso:

${(a + 4)}^{2} \\ = {a}^{2} + 2(a)(4) + {4}^{2} \\ = {a}^{2} + 8a + 16$

${(2m + 1)}^{2} \\ ={ (2m)}^{2} + 2(2m)(1) + {1}^{2} \\ = 4 {m}^{2} + 4m + 1$

${(1 + 3b) }^{2} \\ = {1}^{2} + 2(1)(3b) + {(3b)}^{2} \\ = 1 + 6b + 9 {b}^{2}$