Question

4x(x+6)-x elevado a 2=5x elevado a 2

Answer 1

4x(x+6)-x²=5x²
4x²+24x-x²-5x²=0
-2x²+24x=0(agr transfere o zero pro primeiro termo)
-2x²+24x+0 (let's go báskara)
(∆=b²-4.a.c)
∆=24²-4.-2.0
∆=576
(x=-b+-√∆÷2.a)
x=-24(+-√24)/2.(-2)
x1=-24+24/(-2)=0
x2=-24-24/(-2)=24
x1=0
x2=24