इस को ऐड करना है कैसे करें iv no wala
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iv) x⁴-x³+9,4x-9x²-7,-7x+10x²+x
= x⁴-x³+9+4x-9x²-7+(-7x)+10x²+x
= x⁴-x³+9+4x-9x²-7-7x+10x²+x
= x⁴-x³+9-7+4x-7x+x-9x²+10x²
= x⁴-x³+2-2x+x²
= x²-x³+x⁴-2x+2
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