. 5x – [x2 – {2x (1-x+4x2) – 3x (x2 – 5x – 3)}]-8x.
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Answered by
1
Answer:
-19x² - 9x - 3x³
Step-by-step explanation:
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Answered by
4
Answer:
3x(x²-6x+2)
Step-by-step explanation:
5x-[x²-{2x(1-x+4x2)-3x(x²-5x-3)}]-8x
=5x-[x²-{2x(1-x+8)-(3x³+15x²+9x)}]-8x
=5x-[x²-{2x(9-x)-(3x³+15x²+9x)}]-8x
=5x-[x²-(18x-2x²)-(3x³+15x²+9x)]-8x
=5x-[(x²-18x+2x²)-(3x³+15x²+9x)]-8x
=5x-[(3x²-18x)-(3x³+15x²+9x)]-8x
=5x-(3x²-18x-3x³+15x²+9x)-8x
=5x-(-3x³+18x²-9x)-8x
=5x+3x³-18x²+9x-8x
=3x³-18x²+6x
=3x(x²-6x+2)
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