Question

x2=8x-15 alguien me podría ayudar utilizando la formula general?

Answer 1

Resolver.

x² = 8x - 15
x² - 8x + 15 = 0
a = 1
b = - 8
c = 15

Formula.

X = [- b +/-√(b² - 4ac)]/2a
X = [- (- 8)+/-√((-8)² - 4(1)(15)](2*1)
X = [ 8 +/-√(64 - 60)]/2
X = [8 +/-√4]/2
X = [8 + /-2]/2
x₁ = (8 + 2)/2
x₁  = 10/2
x₁ = 5
   o
x₂ = (8 - 2)/2
x₂ = 6/2
x₂ = 3

Solucióm.
(5 , 3)