Question

calcule (4-y) elevado a 4

Answer 1

Resolução:
(4-y)⁴ = (4-y)².(4-y)²
(4²-2.4.y+y²).(4²-2.4.y+y²)
(16-8y+y²).(16-8y+y²)
256-128y+16y²-128y+64y²-8y³+16y²-8y³+y⁴
y⁴-8y³-8y³+16y²+64y²+16y²-128y-128y+256
y⁴-16y³+96y²-256y+256
y⁴-16y³+96y²-256y+256

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