factorise x^4-5x^3-24x^2
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Answer:
x⁴-5x³-24x²
= x²(x²-5x-24)
= x²[x²-(8x-3x - 24]
= x²[x²-8x + 3x-24]
= x²[x(x-8)+3(x-8)]
= x²(x-8)(x+3)
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