Wielomian w(x)=-4x (do potęgi 4)+26x (do potęgi 3) -12x (do potęgi 2). Zapisz w postaci iloczynowej
W(x)=-4x⁴+26x³-12x²
W(x)=-2x²(2x²-13x+6)
W(x)=-2x²(x-6)(x + 1/2)
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2x²-13x+6=(x-6)(x + 1/2)
Δ=b²-4ac=(-13)²-4*2*6=169-48=121
√Δ=11
x₁=[-b-√Δ]/2a=[13-11]/4=2/4=1/2
x₂=[-b+√Δ]/2a=[13+11]/4=24/4=6
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W(x)=-4x⁴+26x³-12x²
W(x)=-2x²(2x²-13x+6)
W(x)=-2x²(x-6)(x + 1/2)
---
2x²-13x+6=(x-6)(x + 1/2)
Δ=b²-4ac=(-13)²-4*2*6=169-48=121
√Δ=11
x₁=[-b-√Δ]/2a=[13-11]/4=2/4=1/2
x₂=[-b+√Δ]/2a=[13+11]/4=24/4=6