Question

5 ° (а во 2 степени - 0,45а + 1,2) + (0,8 во 2 степени - 1,2а) - (1,6 во 2 степени - 2а) =

Answer 1

решение задания смотри на фотографии

Answer 2

To solve this expression, we need to apply the order of operations (PEMDAS) and simplify each term.

PEMDAS stands for Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction, and it tells us the order in which we should perform operations.

Let's start with the first term:

5 ° (а во 2 степени - 0,45а + 1,2) = 5 * (а^2 - 0.45a + 1.2)

Next, we simplify the second term:

(0,8 во 2 степени - 1,2а) = (0.8)^2 - 1.2a = 0.64 - 1.2a

Finally, we simplify the third term:

(1,6 во 2 степени - 2а) = (1.6)^2 - 2a = 2.56 - 2a

Now we can substitute the simplified terms back into the original expression:

5 * (а^2 - 0.45a + 1.2) + (0.64 - 1.2a) - (2.56 - 2a)

Next, we can simplify by distributing the 5:

5a^2 - 2.25a + 6 + 0.64 - 1.2a - 2.56 + 2a

Combining like terms, we get:

5a^2 - 1.45a + 3.08

Therefore, the final answer is 5a^2 - 1.45a + 3.08.