Question

please help me :(

Solve by factoring.
3x2 + 11x - 20 = 0

answer choices;
x = 5 or x = -1.33333 x = -5 or x = 1.33333
x = -1.66667 or x = 4 x = -0.25 or x = -1.66667

Answer 1

okay
so you can write 3x^2+11x-20 as 3x^2+15x-4x-20=0
so 3x(x+5)-4(x+5)=0
so (x+5)(3x-4)=0
so x=-5 or x=4/3

Answer 2

4/3 = 1.33333333333

Answer 3

so x=-5 or x=1.3333333

Answer 4

thnx :)

Answer 5

welcome ^^