Question

plz tell this answer​

Answer 1

Answer:

Option b is correct answer

in my opinion ion

Answer 2

Step-by-step explanation:

$(a + b + c) = 9 \\ \\ = > (a + b + c) ^{2} = 81 \\ \\ = > {a}^{2} + {b}^{2} + {c}^{2} + 2ab + 2bc + 2ca = 81 \\ \\ = > {a}^{2} + {b}^{2} + {c}^{2} + 2(ab + bc + ca) = 81 \\ \\ = > {a}^{2} + {b}^{2} + {c}^{2} + 2 \times 23 = 81 \\ \\ = > {a}^{2} + {b}^{2} + {c}^{2} = 81 - 46 \\ \\ = > {a}^{2} + {b}^{2} + {c}^{2} = 35 \\ \\ \\ using \: formula \: \: \: - \: \: \: (x + y + z) {}^{2} = {x}^{2} + {y}^{2} + {z}^{2} + 2xy + 2yz + 2zx$

answer is option A 35