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myrzilka [38]
3 years ago
8

Find the cuberoot of 512please answer fast thank you​

Mathematics
2 answers:
Stolb23 [73]3 years ago
6 0

Answer:

8 is the cube root of 512

Step-by-step explanation:

=》

512 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2

=》

\sqrt[3]{512}  = 2 \times 2 \times 2

=》

\sqrt[3]{512}  = 8

RoseWind [281]3 years ago
3 0

Answer:

8

Step-by-step explanation:

\sqrt[3]{512}  =  \sqrt[3]{ {8}^{3} } = 8 \\

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The equation above is the intercept form. Both a-term and b-term are the roots of equation.

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These are the roots of equation. Therefore we substitute a = - 1/3 and b = 5 in the equation.

(x +  \frac{1}{3} )(x -  5) = 0

Here we can convert the expression x+1/3 to this.

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Simplify by multiplying both expressions.

3 {x}^{2}  - 15x + x - 5 = 0 \\ 3 {x}^{2}  - 14x  - 5 = 0

<u>Answer</u><u> </u><u>Check</u>

Substitute the given roots in the equation.

3 {(5)}^{2}  - 14(5)  - 5 = 0 \\ 75 - 70 - 5 = 0 \\ 75 - 75 = 0 \\ 0 = 0

3( -  \frac{1}{3} )^{2}  - 14( -  \frac{1}{3}) - 5 = 0 \\ 3( \frac{1}{9} ) +  \frac{14}{3}  - 5 = 0 \\  \frac{1}{3}  +  \frac{14}{3}  -  \frac{15}{3}  = 0 \\  \frac{15}{3}  -  \frac{15}{3}  = 0 \\ 0 = 0

The equation is true for both roots.

<u>Answer</u>

\large \boxed {3 {x}^{2}  - 14x - 5 = 0}

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2 years ago
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Step-by-step explanation:

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__ ___

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Answer:

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Step-by-step explanation:

on the picture

if it's helpful ❤❤❤

THANK YOU.

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