Question

Ayuda, es factorización de trinomio ​

Answer 1

69) 6x^2 - 7x - 3

= (2x - 3) (3x + 1)

(2x)(3x) = 6x^2
(2x)(1) + (3x)(-3)
2x - 9x = - 7x
(-3)(1) = - 3

70) 20x^2 + 7x - 6

(4x + 3) (5x - 2)

(4x)(5x) = 20x^2
(4x)(-2)+(3)(5x)
- 8x + 15x = 7x
(3)(-2) = - 6

71) 18a^2 - 13a - 5

(a - 1) (18a + 5)

(a)(18a) = 18a^2
(a)(5)+(18a)(-1)
5a -18a = - 13a
(-1)(5) = - 5

72) 7m^2 - 23m+ 6

(7m - 2) (m - 3)

(7m)(m) = 7m^2
(7m)(-3)+(m)(-2)
- 21m - 2m = - 23m
(-2)(-3) = 6