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Simplify `:3x^(2)-[7x-{5x^(2)-(2x-3)(4x-2)-5}-2]`A. 9x-9B. 8x-9C. 7x-9D. 6x-9 |
Answer» Correct Answer - A `3x^(2)-[7x-{5x^(2-(2x-3)(4x-2)-5}-2]` `=3x^(2)-[7x-{5x^(2)-(8x^(2)-4x-12x+6)-5}-2]` `=3x^(2)-[7x-{5x^(2)-(8x^(2)-16x+6)-5}-2]` `=3x^(2)-[7x-{5x^(2)-(8x^(2)-16x+6)-5}-2]` `=3x^(2)-[7x-{5x^(2)-8x^(2)+16x-6-5}-2]` `=3x^(2)-[7x-{5x^(2)-8x^(2)+16x-6-5}-2]` `=3x^(2)-[7x-{-3x^(2)-16x-11}-2]` `=3x^(2)-[7x-{-3x^(2)-16x-11}-2]` `=3x^(2)-[7x+3x^(2)-16x-11-2]` `=3x^(2)-[3x^(2)-9x+9]` `3x^(2)-3x^(2)+9x-9` `9x-9` Hence the correct option is (a) |
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