Question

necesito ayuda con estas factorizaciones

Answer 1

Resolución:

70. x(y + 1) – 3(y + 1) = (y + 1)(x – 3)

71. a(b – 1) + c(b – 1) = (b – 1)(a + c)

72. x(w² – a²) + 2(w² – a²) = (w² – a²)(x + 2)

= (w + a)(w – a)(x + 2)

73. m(a – c) + a – c = (a – c)(m + 1)

74. b(a + 1) – a – 1 = b(a + 1) – (a + 1)

= (a + 1)(b – 1)

75. 1 – b + 2a(1 – b) = (1 – b)(1 + 2a)

76. (a + 3)(a + 1) – 4(a + 1) = (a + 1)(a + 3 – 4)

= (a + 1)(a – 1)

77. m(n – 2) + 2 – n = m(n – 2) – (n – 2)

= (n – 2)(m – 1)

78. (1 + 3n)(m + 1) – 2n(m + 1) + 3(m + 1)

= (m + 1)(1 + 3n – 2n + 3)

= (m + 1)(n + 4)

79. c(x – 3y) + d(3y – x)

= c(x – 3y) – d(x – 3y)

= (x – 3y)(c – d)