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3 years ago

I will give crown if answered right i just need to check my work

Mathematics

2 answers:

frutty [35]3 years ago

6 0

Answer:

9x(3x-2) (3x+2)

Step-by-step explanation:

$81x^{3}-36x$

9(9x³ - 4x)

9x(9x² - 4)

Since both terms are perfect squares factor using the difference of squares formula, a² - b² = (a + b) (a - b)

Therefore, 9x(3x-2) (3x+2)

puteri [66]3 years ago

5 0

Answer:

81z^3-36z = 9z(3z-2)(3z+2)

Step-by-step explanation:

(81z^3-36z)=9z(9z^2-4)

9z(9z^2-4)=9z(3z-2)(3z+2)

81z^3-36z=9z(3z-2)(3z+2)

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2 years ago

Which equation(s) represents a proportional relationship? A) y = 5+x B) y = 4x C) y = 7x? D) y = 2-x

andreyandreev [35.5K]

Answer:

B & C

Step-by-step explanation:

A proportional relationship has a proportionality constant (constant rate of change) and and must cross through the origin (or begin at (0,0). This means it's y-intercept is 0. Each of the options is a linear function. All of the functions have a constant rate of change. Only one as b=0 or 0 as the y-intercept.

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