Question

Me ajudem pfvvv
Resolver essas equações literais sendo x a incógnita:
a) x²- 2nx + n² = 0
b) 5b²x² - 125c² = 0
MT obg?!!!

Answer 1

a)
x²-2nx+n²=0

a=1
b=-2n
c=n²

Δ=b²-4ac
Δ=(-2n)²-4(1)(n²)
Δ=4n²-4n²
Δ=0

como Δ=0 
x'=x"=-b/2a=-(-2n)/2=+n

S={ n}

b)
5b²x²-125c²=0
5b²x²=125c²
x²=125c²/5b²

x²=25c²/b²

x=±√25c²/b²

x=±5c/b  Com b≠0

S={5c/b,-5c/b}