-12=-5x×^2-4x-11

Question

Please show me the steps in sloving this math problem

Answer 1

This can be written:

5x²+4x+11-12=0,

5x²+4x-1=0, which factorises:

(5x-1)(x+1)=0, so x=⅕ or -1 (because 5x-1=0, so 5x=1 and x=⅕; or x+1=0, so x=-1).