Question

25m (во 2 степени)-(3m-1) (во второй степени)

Answer 1

25m²-(3m-1)²=25m²-(9m²-6m+1)=25m²-9m²+6m-1=16m²+6m-1

Answer 2

To simplify the expression you provided, we need to expand and combine like terms:

25m^(2) - (3m - 1)^(2)

Let's start by simplifying the square of the binomial (3m - 1)^(2):

(3m - 1)^(2) = (3m - 1) * (3m - 1) = 9m^(2) - 6m + 1

Now, we can substitute this result back into the original expression:

25m^(2) - (9m^(2) - 6m + 1)

Now, distribute the negative sign through the parentheses:

25m^(2) - 9m^(2) + 6m - 1

Combine like terms:

(25m^(2) - 9m^(2)) + 6m - 1

Simplify the terms with m^(2):

16m^(2) + 6m - 1

So, the simplified expression is 16m^(2) + 6m - 1.