40
That depends what the value of A is.
3 to the 2nd power plus 5 x 4 - 9 = 20 32 + 5 x 4 - 9= 9 + 20 - 9= 20
21 to the 2nd power is 441.
91 to the 2nd power is 8,281.
20/4 = 5 + 0.22 = 5.04 x 2 = 10.08 - 2.13 = 7.95
25
4 to the 2nd power in exponents is 42
25a2
200 20 10 10 2 2 5 2 5 2 2 5 the final answer is 2 to the 3rd power and 5 to the 2nd power
20 to the fifth power is... 3,200,000
1.39 times 10 to the 2nd power is 139