Question

A) (5x – 2y) (x + y) — 5x; 6) 3a2+(3a+b)(b-a);B) 2b (7 — b)-(a +26) (3 — b);r) (x+6y) (1 - 4x) - 4x (y - x);A) (a +26) (4a - 5b)-(3a - b)(b − a);e) (4x - 5y) (3y + x)+(2x - y) (x - 2y).​

Answer 1

Ответ:

1) 5х²+3ху-2у²-5х

2) 2ab+b²

3) 40b-2b²-3a+ab-78

4) x+6y-28xy

5) 7a²-9ab+104a-130b+b²

6) 2xy+6x²-13y²

Answer 2

To evaluate the expressions provided, let's go through them one by one:

A) (5x - 2y) + (x + y) - 5x + 6

To simplify this expression, we can combine like terms: (5x + x - 5x) + (-2y + y) + 6

Simplifying further: (6x - 4y) + 6

The simplified expression is 6x - 4y + 6.

B) 2b + (7 - b) - (a + 26) + (3 - b)

Again, let's combine like terms: (2b - b) + (7 - a - 26) + (3 - b)

Simplifying further: (b - a - 19) - b + 3

Combining like terms: -b - a - 19 - b + 3

Simplifying: -2b - a - 16

The simplified expression is -2b - a - 16.

C) (x + 6y) + (1 - 4x) - 4x + (y - x)

Combining like terms: (x - 4x - 4x - x) + (6y + y)

Simplifying further: (-4x - 4x - x + x) + (6y + y)

Simplifying: -8x + 7y

The simplified expression is -8x + 7y.

D) (a + 26) + (4a - 5b) - (3a - b)(b - a)

Expanding the term within the parentheses: (a + 26) + (4a - 5b) - (3a - b)(-b + a)

Simplifying: (a + 26) + (4a - 5b) - (-3ab - a^2 + b^2 + ab)

Combining like terms: a + 26 + 4a - 5b + 3ab + a^2 - b^2 - ab

Rearranging terms: a + 4a + 3ab + a^2 - 5b - ab + 26 - b^2

Combining like terms: a + 4a + 3ab - ab + a^2 - b^2 - 5b - b^2 + 26

Simplifying: 5a + 2ab + a^2 - 2b^2 - 5b + 26

The simplified expression is 5a + 2ab + a^2 - 2b^2 - 5b + 26.

E) (4x - 5y) + (3y + x) + (2x - y) + (x + 2y)

Combining like terms: (4x + x + 2x + x) + (-5y + 3y - y + 2y)

Simplifying further: (8x) + (-y + 4y)

Simplifying: 8x + 3y

The simplified expression is 8x + 3y.

I hope this helps! Let me know if you have any further questions.