Nie było mnie na jednych zajęciach. Mógłby mi ktoś to rozpisać? (x+2)²(x²-2x+4)
(x+2)²(x²-2x+4) =
= (x+2)(x+2)(x²-2x+4) =
(x+2)(x²-2x+4) = x³+2³, a³+b³ = (a+b)(a²-ab+b²)
= (x+2)(x³+2³) =
= x⁴+8x+2x³+16 =
= x⁴+2x³+8x+16
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(x+2)²(x²-2x+4) =
= (x+2)(x+2)(x²-2x+4) =
(x+2)(x²-2x+4) = x³+2³, a³+b³ = (a+b)(a²-ab+b²)
= (x+2)(x³+2³) =
= x⁴+8x+2x³+16 =
= x⁴+2x³+8x+16