1. Simplify the following expressions:

a. [tex](14b - 4a) - 6\left(2a - \frac{1}{2}b + 2b\right)[/tex]

b. [tex]-\left(2x^2y^3 - 4x^3y^5 + x^2y^3\right) - x^2y^3 + 4xy^2[/tex]

c. [tex]3(x - y) + 2(-2x + 6y)[/tex]

d. [tex]2yx^3 \times 6xy^4 - \frac{16x^2y}{2x}[/tex]



Answer :

Alright, let's simplify each expression step-by-step.

### Part a: Simplify [tex]\((14b - 4a) - 6(2a - \frac{1}{2}b + 2b)\)[/tex]

First, distribute the 6 within the parentheses:
[tex]\[ 6(2a - \frac{1}{2}b + 2b) = 6 \cdot 2a - 6 \cdot \frac{1}{2}b + 6 \cdot 2b = 12a - 3b + 12b \][/tex]

Combine like terms in the expression within the parentheses:
[tex]\[ 12a - 3b + 12b = 12a + 9b \][/tex]

Rewrite the original expression:
[tex]\[ (14b - 4a) - (12a + 9b) \][/tex]

Distribute the negative sign:
[tex]\[ 14b - 4a - 12a - 9b \][/tex]

Combine like terms:
[tex]\[ (14b - 9b) + (-4a - 12a) = 5b - 16a \][/tex]

So, the simplified expression is:
[tex]\[ 5b - 16a \][/tex]

### Part b: Simplify [tex]\(-\left(2x^2y^3 - 4x^3y^5 + x^2y^3\right) - x^2 y^3 \cdot 4xy^2\)[/tex]

First, simplify inside the parentheses:
[tex]\[ 2x^2y^3 - 4x^3y^5 + x^2y^3 = 2x^2y^3 + x^2y^3 - 4x^3y^5 = 3x^2y^3 - 4x^3y^5 \][/tex]

Distribute the negative sign:
[tex]\[ -(3x^2y^3 - 4x^3y^5) = -3x^2y^3 + 4x^3y^5 \][/tex]

Next, simplify the product:
[tex]\[ x^2 y^3 \cdot 4xy^2 = 4x^3y^5 \][/tex]

Combine the expressions:
[tex]\[ -3x^2y^3 + 4x^3y^5 - 4x^3y^5 \][/tex]

Combine like terms:
[tex]\[ -3x^2y^3 + 0 \cdot x^3y^5 = -3x^2y^3 \][/tex]

So, the simplified expression is:
[tex]\[ -3x^2y^3 \][/tex]

### Part c: Simplify [tex]\(3(x - y) + 2(-2x + 6y)\)[/tex]

Distribute the constants inside the parentheses:
[tex]\[ 3(x - y) = 3x - 3y \][/tex]
[tex]\[ 2(-2x + 6y) = -4x + 12y \][/tex]

Combine the expressions:
[tex]\[ 3x - 3y - 4x + 12y \][/tex]

Combine like terms:
[tex]\[ (3x - 4x) + (-3y + 12y) = -x + 9y \][/tex]

So, the simplified expression is:
[tex]\[ -x + 9y \][/tex]

### Part d: Simplify [tex]\(2yx^3 \times 6xy^4 - \frac{16x^2y}{2x}\)[/tex]

First, simplify the product:
[tex]\[ 2yx^3 \times 6xy^4 = 12yx^4y^4 = 12x^4 y^5 \][/tex]

Simplify the division:
[tex]\[ \frac{16x^2y}{2x} = \frac{16}{2}x^{2-1}y = 8xy \][/tex]

Combine the expressions:
[tex]\[ 12x^4y^5 - 8xy \][/tex]

So, the simplified expression is:
[tex]\[ 12x^4y^5 - 8xy \][/tex]