6) Simplify:
a)(7x+4x²-3x+1)-(4x+3x+-5x+6) + (x2+x-3
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b)(4x*- 3x +1)+(7x-2x+5) - (2x+5x2–2x+6)
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Answer:
1. 3x(3x + 2). 2. 4x3 + 8x2 – 19x – 21
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