MCQOPTIONS
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| 1. |
The value of which of the following expressions is 66 for \[a=-2~\]and \[b=5?~\] |
| A. | \[{{a}^{2}}+3ab-{{b}^{2~}}\] |
| B. | \[6{{a}^{2}}-5ab\] |
| C. | \[-3{{a}^{2}}-ab+6{{b}^{2}}\] |
| D. | \[-{{a}^{2}}-2ab+2{{b}^{2}}\] |
| Answer» E. | |