Question

1)Упростите выражение: А) 3х(2х-5+2х2) = __________________________________________________________ Б) -2a2(3a+a2-4) = ___________________________________________________________ В) 12(3y-1)-3(4y+2) = ________________________________________________________ 2) Решите уравнение: А) 2х+4(х-2)=5-4х, Вариант 2 1)Упростите выражение: А) 2y(3y-4y2+3) = _____________________________________ Б) -4а²(2а2-5+4а) В)13(2у+1)-4(5у-6) 2 Решить уравнение А)2х+3(х-1)=3х+8. СРОЧНООООООО ПЖЖЖЖ

Answer 1

6x²-15x+6x³
-6a³-2a⁴+8a²
36y-12-12y-6=24y-18
6y²-8y³+6y
-8a⁴+20a²-16a³
26y+13-20y+24=6y+37
уравнение на фото

Answer 2

1) Упростите выражение:

A) 3x(2x-5+2x^2)

To simplify the expression, we distribute 3x across the terms inside the parentheses:

3x(2x-5+2x^2) = 6x^2 - 15x + 6x^3

Б) -2a^2(3a+a^2-4)

Similarly, we distribute -2a^2 across the terms inside the parentheses:

-2a^2(3a+a^2-4) = -6a^3 - 2a^4 + 8a^2

В) 12(3y-1)-3(4y+2)

We perform the multiplication and subtraction:

12(3y-1)-3(4y+2) = 36y - 12 - 12y - 6 = 24y - 18

2) Решите уравнение:

А) 2x + 4(x-2) = 5-4x

First, we distribute 4 across the terms inside the parentheses:

2x + 4x - 8 = 5 - 4x

Combine like terms:

6x - 8 = 5 - 4x

Add 4x to both sides:

10x - 8 = 5

Add 8 to both sides:

10x = 13

Divide by 10:

x = 1.3

В) 2х + 3(х-1) = 3х + 8

First, distribute 3 across the terms inside the parentheses:

2x + 3x - 3 = 3x + 8

Combine like terms:

5x - 3 = 3x + 8

Subtract 3x from both sides:

2x - 3 = 8

Add 3 to both sides:

2x = 11

Divide by 2:

x = 5.5

1) Упростите выражение:

A) 2y(3y-4y^2+3)

To simplify the expression, we distribute 2y across the terms inside the parentheses:

2y(3y-4y^2+3) = 6y^2 - 8y^3 + 6y

Б) -4a²(2a^2-5+4a)

Similarly, we distribute -4a^2 across the terms inside the parentheses:

-4a²(2a^2-5+4a) = -8a^4 + 20a^2 - 16a

В) 13(2y+1)-4(5y-6)+2

We perform the multiplication and subtraction:

13(2y+1)-4(5y-6)+2 = 26y + 13 - 20y + 24 + 2 = 6y + 39

Решить уравнение

А) 2х + 3(х-1) = 3х + 8

This equation was already solved above.

I hope this helps! Let me know if you have further questions or need additional assistance.