Question

Q.4 If a = 2,b= 3, c = 4, find the value of a'b + bc - 3c-2abc​

Answer 1

$ab + bc - 3c - 2abc \\ = > (2 \times 3) + (3 \times 4) - (3 \times 4) - (2 \times 2)(2 \times 3)(2 \times 4) \\ = > 6 + 12 - 12 - (4 \times 6 \times 8) \\ = > 6 + 12 - 12 - 192 \\ = > 18 - 12 - 192 \\ = > 6 - 192 \\ = > - 186$

Answer 2

Answer:

2*3+3*4-3*3-2*2*3*4

6+12-9-48

18-57

39