MCQOPTIONS
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MCQOPTIONS
| 1. |
Factorize the following expression:\[{{(2a+3b+c)}^{2}}-20a10c-30b+21\]. |
| A. | \[\left( 2a+3b+c-7 \right)\left( 2a+3b+c-3 \right)\] |
| B. | \[\left( 2a3b+c+7 \right)\left( 2a3b+c-3 \right)\] |
| C. | \[\left( 2a+3bc-7 \right)\left( 2a+3b+c-7 \right)\] |
| D. | \[\left( a+3b+c-7 \right)\left( a+3b+c-3 \right)\] |
| E. | None of these |
| Answer» B. \[\left( 2a3b+c+7 \right)\left( 2a3b+c-3 \right)\] | |