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| 1. |
Factorise X square + 11 x + 13 |
| Answer» b² - 4ac = (11)² - 4(1)(13) = 121 - 52 = 69x = -b +/- √69/2a. =. -11+/-√69/2 So x = -11 + √69/2. Or. x = -11-√69/2 | |