Question

2*(X-3)-3(X+5)=(a+5)(a-1)+(a-3)^2=(3a-a^2)-a^2(a-2)(a+2) упростите плиз

Answer 1

Ответ:

Пошаговое объяснение:

Answer 2

Let's simplify the given expression step by step:

2*(X-3)-3(X+5)

= 2X - 6 - 3X - 15 // distribute the negative sign to the second term in parentheses

= -X - 21 // combine like terms

Next, we have:

(a+5)(a-1)+(a-3)^2

= (a^2 + 4a - 5) + (a^2 - 6a + 9) // use FOIL to expand the first term and square the second term

= 2a^2 - 2a + 4 // combine like terms

Finally, we have:

(3a-a^2)-a^2(a-2)(a+2)

= 3a - a^2 - a^4 + 4a^2 // use distributive property and FOIL

= -a^4 + 3a^2 + 3a // rearrange in descending order of powers of a

Therefore, the simplified expression is:

-X - 21 = 2a^2 - 2a + 4 = -a^4 + 3a^2 + 3a

We can further simplify by rearranging terms and combining like terms if possible, but as it stands, this is the simplified expression.