Assuming that it is only the x that is being squared.
(-21x^2)/39 = (-7x^2)/13
The number that is squared to get 1521 is 39, since (39 \times 39 = 1521).
When you divide 942 by 43, you get 21 with a remainder. Specifically, 43 goes into 942 a total of 21 times, which equals 903. Subtracting 903 from 942 gives a remainder of 39. Thus, 942 divided by 43 is 21 with a remainder of 39.
-39
39
7 divided by 13 times 2 divided by 3 is 14/39
39 ÷ 21 = 1 with remainder 18 or 1.8571 times.
6.33333 repeating or rounded to 6.3
39 squared is 1521.
You multiply 39 by itself.
I'm worried that I may not understand your question. If you mean, "What is the numerical answer to 39 squared?" IE., 39^2 or 39x39, you can type it into a calculator or use long multiplication to find out that it is 1521. If you are asking about what 'squared' is: Squaring a number is the same as multiplying it by itself 2 times, so 39^2 = 39 x 39 We can also say that the number 39 is being raised to the power of 2. Cubing a number is multiplying it by itself 3 times (to the power of 3), so 39^3 = 39 x 39 x 39 Note: The little ^ thing indicates that the 2 and 3 coming after it are smaller and written up in the corner.
39-15+18 6x3 Answer: 25
17