Question

1)(x+3) (x-5) = 2) (2x-3) (4+x) = 3) 3x (6x+5) 4) 4x 2степень (3x-5)

Answer 1

1)(x+3) (x-5) =х^2-5х+3х-15=х^2-2х-15
2) (2x-3) (4+x) =8х+2х^2-13-3х=5х+2х^3-13
3)3х(6х+5)=18х^2+15х
4)4х^2(3х-5)=4х^2×3х-4х^2×5=12х^3-20х^2

Answer 2

Let's solve each of the given equations step by step:

1. (x+3)(x-5) =

Expanding the equation: x(x-5) + 3(x-5)

Simplifying further: x^2 - 5x + 3x - 15

Combining like terms: x^2 - 2x - 15

2. (2x-3)(4+x) =

Expanding the equation: 2x(4+x) - 3(4+x)

Simplifying further: 8x + 2x^2 - 12 - 3x

Combining like terms: 2x^2 + 5x - 12

3. 3x(6x+5) =

Expanding the equation: 3x * 6x + 3x * 5

Simplifying further: 18x^2 + 15x

4. 4x^2(3x-5) =

Expanding the equation: 4x^2 * 3x - 4x^2 * 5

Simplifying further: 12x^3 - 20x^2

Note: In equation 4, the "2степень" is not clear. If it's intended to represent "to the power of 2," then the expression would be 4x^2.