Question

use the formula to expand (3b-6+m)2

Answer 1

Explanation:

It is of form (a + b + c)² = a² + b² + c² + 2ab+ 2bc + 2ca

Now put the values of a= 3b, b= (-6), c= m

and get the answer

Answer 2

Answer:

$(3b - 6 + m) {}^{2} \\ (x + y + z) {}^{2} = {x}^{2} + {y}^{2} + {z}^{2} + 2xy + 2yz + 2zx \\ {(3b)}^{2} + {( - 6)}^{2} + {(m)}^{2} + (2 \times 3b \times - 6) + (2 \times - 6 \times m) + (2 \times m \times 3b) \\ {9b}^{2} + 36 + {m}^{2} + ( - 36b) + ( - 12m) + 6bm \\ {9b}^{2} + 36 + {m}^{2} - 36b - 12m + 6bm$