digite AltGr2 ²

AltGr1 ¹

AltGr3 ³

x²+18x-240=0

x₁=[-18+√(18²-4*1*(-240))]/2

x₁=[-18+√(324+960)]/2

x₁=[-18+√(1.284)]/2

x₁=[-18+√(4*321)]/2

x₁=[-18+2√(321)]/2

x₁=-9+√(321)

x₂=-9-√(321)

Ola karina

x² + 18x - 240 = 0

delta

d² = 18² + 4*240 = 1284

d = 2*√321

x1 = (-18 + 2√321)/2 = -9 + √321

x2 = (-18 - 2√321)/2 = -9 - v321

pronto