rozwiąż równanie : (pod pierwiastkiem do znaku = ) √x²-8x+16=6
wzor √x²=|x|
√x²-8x+16=6
√(x-4)²=6
|x-4|=6
x-4=6 ∨ x-4=-6
x= 6+4 x=-6+4
x 1=10 x 2=-2
Rownanie ma 2 pierwiastki x 1=10 i x 2=-2
Δ = 64 - 4 · 1 · (-20) = 64 + 80 = 144, √Δ = 12
x₁ =
x₂ =
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wzor √x²=|x|
√x²-8x+16=6
√(x-4)²=6
|x-4|=6
x-4=6 ∨ x-4=-6
x= 6+4 x=-6+4
x 1=10 x 2=-2
Rownanie ma 2 pierwiastki x 1=10 i x 2=-2
Δ = 64 - 4 · 1 · (-20) = 64 + 80 = 144, √Δ = 12
x₁ =
x₂ =