Simplify and find the degree of 6x^2+1-[8x-{3x^2-7-(4x^2-2x+5x+9)}}
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Answer:
6x²+1-[8x-{3x²-7-(4x²-2x+5x+9)}]
= 6x²+1-[8x-3x²+7-(4x²-2x+5x+9)]
= 6x²+1-[8x-3x²+7-4x²+2x-5x-9]
= 6x²+1-8x+3x²-7+4x²-2x+5x+9
= 13x²+5x+3 :Ans
degree = 2 :Ans
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