What value will come in place of question mark (?) in the following question?
​$$\left(9^2 \times 23 + 7^3 \times 8 + ?\right){\frac{1}{2}} = 87$$​​

Correct option is B

Given:
$$\left(9^2 \times 23 + 7^3 \times 8 + x\right){\frac{1}{2}} = 87 \\$$​
Solution: 
Let  ? = x 
$$\left(9^2 \times 23 + 7^3 \times 8 + x\right){\frac{1}{2}} = 87 \\(1863 + 2744 + x) = 174 \\4607 + x = 174 \\x = 174 - 4607\\x = -4433$$​​