Question

a) x^2+x-6=0
b)x^2-4x-5=0
c) 2x^2+13x+20=0
d)5x^2-11x+2=0​

Answer 1

Explicación paso a paso:

a) x²+x-6=0

x +3

x -2

(x+3)(x-2)=0

x=-3 x=2

b) x²-4x-5=0

x -5

x +1

(x-5)(x+1)=0

x=5 x=-1

c) 2x²+13x+20=0

2x 5

x 4

(2x+5)(x+4)=0

x=-5/2 x=-4

d)5x²-11x+2=0

5x -1

x -2

(5x-1)(x-2)=0

x=1/5 x=2