Question

$3 {}^{2} + 3 {}^{4} =$
please explain​

Answer 1

Step-by-step explanation:

3^2 + 3^4 = 9+ 81

= 90

this is ur answer

3^2 = 3×3 = 9

3^4 = 3×3×3×3 = 81

hope this will help u ‼️‼️.

Answer 2

Answer:

$3 {}^{2} + 3 {}^{4} = 3 {}^{2} (1 + 3 {}^{2} ) \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: =9(1 + 9) \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 9 \times 10 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 90 \\ \\ therefore \\ 3 {}^{2} + 3 {}^{4} = 90$

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