Encuentra la expresión factorizada de cada expresión.
Me puedan resolver todas plis (es para mañana)
Respuestas a la pregunta
Respuesta:
5.
Tabla :
x I ( 2a + n )
______|_________
( 2a -n ) I ( 2a+n )(2a-n ) = 4a²- n²
I
________________________
( 2a +n ) I ( 2a+n ) ( 2a+n ) = ( 2a+n )²
_________________________
Tabla :
x I ( x+ y )
_________________________________
(x+y) I ( x + y )*( x+y ) = ( x+y )²
I
__________________________
(x+y)² I ( x+y)²* ( x+y ) = ( x+y)³
6.
a.(x-2)(x+3) = x.x + 3x - 2x - 2.3 = x² + 3x - 2x - 6 = x² + x - 6
b.(2a-5)(2a+6) = 2a.2a + 6.2a - 5.2a - 5.6
= 4a² + 12a - 10a - 30 = 4a² + 2a - 30
c.(a-3b)(a+x) = a.a - a.x - 3b.a - 3b.x = a² - ax -3ab - 3bx
d.(1-a)(a+1) = a + 1 - a.a - a = a + 1 - a² - a = -a² + 1
e.(3ab-5x)(3ab+2) = 3ab.3ab + 2.3ab - 5x.3ab - 5x.2
= 9a²b² + 6ab - 15abx - 10x
= (3ab)² + 6ab - 15abx - 10x
f.(m/9+2n/7)(m/9-1/3) = (m/9)² - (m/9.1/3) + (2n/7.m/9) - (2n/7.1/3)
= (m/9)² - (m/27) + (2n/63) - (2n/21)
7.
(a+2)³ = a³ + 3·(a)²·(2) + 3·(a)·(2)² + 2³
(a+2)³ = a³ + 6a² + 12a + 8
(a-4)³ = a³ - 3·(a)²·(4) + 3·(a)·(4)² - 4³
(a-4)³ = a³ + 12a² + 48a - 64
(m-2/7)³ = m³ - 3·(m)²·(2/7) + 3·(m)·(2/7)² - (2/7)³
(m-2/7)³ = m³ + (6/7)m² + (12/49)m - 8/343
(m+5/4)³ = m³ + 3·(m)²·(5/4) + 3·(m)·(5/4)² + (5/4)³
(m+5/4)³ = m³ + (15/4)m² + (75/16)m + 125/64
(2/3+x)³ = (2/3)³ + 3·(2/3)²·(x) + 3·(2/3)·(x)² + (x)³
(2/3 + x)³ = 8/27 + (4/3)x + (2)x² + x³
(n-2/7)³ = n³ - 3·(n)²·(2/7) + 3·(n)·(2/7)² - (2/7)³
(n-2/7)³ = n³ + (6/7)n² + (12/49)n - 8/343
8.
C
B
D
E
A