Question

25x ²y⁴z³-15x³y⁵z²-10xyz ÷ 5xyz


18x⁴-36x³+6x²-12x ÷ 3x

Porfavor ayúdenme​

Answer 1

Respuesta:

Given: f(x)=x

3

−6x

2

+12x−18

To prove: f(x) is increasing on R.

solution:

f(x)=x

3

−6x

2

+12x−18

f

′

(x)=3x

2

−12x+12

=3(x

2

−4x+4)

=3(x−2)

2

⇒f

′

(x)≥0 for all x∈R

∴ f(x) is increasing for all on x∈R.

Answer 2

25x²y⁴z³ - 15x³y⁵z² - 10xyz ÷ 5xyz

5xy³z² -  3x²y⁴z - 2

18x⁴ - 36x³ + 6x² - 12x ÷ 3x

6x³ - 12x² + 2x - 4

Eternamente axllxa