Question

plz send me this answar ​

Answer 1

Answer:

47

Explanation:

$(a + b) {}^{2} = a {}^{2} + b {}^{2} + 2ab \\ \\ \\ (7) { }^{2} = a {}^{2} + \frac{1}{a {}^{2} } + 2a \times \frac{1}{a} \\ \\ \\ 49 - 2 = a {}^{2} + \frac{1}{a {}^{2} } \\ \\ \\ = 47$