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Question

Solve the following quadratic equations by factorization:

33x-12x+3-22x+33x-1=5; x13, -32

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Solution

33x-12x+3-22x+33x-1=53(3x-1)2-22x+322x+33x-1=539x2+1-6x-24x2+9+12x6x2-2x+9x-3=527x2+3-18x-8x2-18-24x6x2+7x-3=519x2-42x-15=56x2+7x-319x2-42x-15=30x2+35x-1530x2-19x2+35x+42x-15+15=011x2+77x=0x2+7x=0xx+7=0x=0 or x+7=0x=0 or x=-7

Hence, the factors are 0 and −7.

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