The first step a math tutor would suggest is to understand what it means when a number has an exponent. The “power” of a number indicates how many times the base would be multiplied by itself to reach the correct value.
The second step is to write the number in the base-exponent form, and lastly calculate what the final result would be. Consider the example of 2 to the power of 4: in exponent form that would be
So re-applying these steps to our particular problem, we first convert our word problem to a base-exponent form of:
To simplify this, all that is needed is to multiply it out:
43 x 43 x 43 x 43 x ... (for a total of 90 times) = 1028397476192573122435817245745052559644295355283430712888204096101464966667560989168693350978324297118616180199320969035225657855935182342089308249
Therefore, 43 to the power of 90 is 1028397476192573122435817245745052559644295355283430712888204096101464966667560989168693350978324297118616180199320969035225657855935182342089308249.