Question

rozwiąż równanie

(2x - 4)(x - 100)= (x + 6)(x - 100)

Answer 1

(2x - 4)(x - 100)= (x + 6)(x - 100)

2x²-200x-4x+400=x²-100x+6x-600

2x²-x²-200x-4x+100x-6x=-600-400

x²-110x=-1000

x²-110x+1000=0

a=1

b=-110

c=1000

Δ=b²-4ac

Δ=(-110)²-4*1*1000

Δ=12100-4000

Δ=8100

√Δ=90

 

x₁=-b+√Δ/2a

x₁=-(-110)+90/2*1

x₁=200/2

x₁=100

 

x₂=-b-√Δ/2a

x₂=-(-110)-90/2

x₂=20/2

x₂=10

 

 

liczę na naj ;d