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3 years ago

Can someone pls tell me how to solve this

Mathematics

2 answers:

miv72 [106K]3 years ago

8 0

Since we find the cube root of 216, we get 6, which is the answer

4vir4ik [10]3 years ago

3 0

Take the cube root of both sides. Or, if you cant see that, just plug in each awnser and see which one ends up being correct. 6^3=216

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3 years ago

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How do you find the sum of cube ?

SIZIF [17.4K]

Answer:

$(2x+5)(4x^{2} -10x+25)=0$

Step-by-step explanation:

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The given equation is.

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Solution:

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$2^{3}x^{3} +5^{3}=0$

$(2x)^{3} +5^{3}=0$ ----------(1)

The sum of the cube formula is given below.

$(a^{3} +b^{3})=(a+b)(a^{2} -ab+b^{2} )$ -----------(2)

By comparing equation 1 and equation 2

$a=2x, b=5$

substitute a and b value in equation 2

$((2x)^{3} +5^{3})=(2x+5)((2x)^{2} -(2x)(5)+5^{2})$

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Therefore the sum of the cube $(2x+5)(4x^{2} -10x+25)=0$

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3 years ago