4. (3x - 2)² – (3x²
+2)(9x – 7)
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this is the answer of this question.
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05manisha2000:
whether it's to factorise or what
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(9x²+4-12x)-(27x³-27x²+18x-14)
=9x²+4-12x-27x³+27x²-18x+14
=-27x³+36x²-30x+18
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