Question

factorise 6 + 7 B minus 3 b square

Answer 1

13 square is 169 ok my friend

Answer 2

$- 3b {}^{2} + 7b + 6 = 0 \\ - 3b { }^{2} + 9b - 2b + 6 = 0 \\ b = 3 \\ b = - 2 \div 3$