Which expression is equivalent to [tex]\frac{\left(4 g^3 h^2 k^4\right)^3}{8 g^3 h^2}-\left(h^5 k^3\right)^5 ?[/tex]

A. [tex]8 g^2 h^3 k^7 - h^{10} k^8[/tex]
B. [tex]8 g^9 h^7 k^7 - h^{10} k^8[/tex]
C. [tex]8 g^3 h^3 k^{12} - h^{25} k^{15}[/tex]
D. [tex]8 g^6 h^4 k^{12} - h^{25} k^{15}[/tex]



Answer :

To simplify the given expression [tex]\(\frac{\left(4 g^3 h^2 k^4\right)^3}{8 g^3 h^2} - \left(h^5 k^3\right)^5\)[/tex], we will break it down step-by-step:

1. Simplify [tex]\((4 g^3 h^2 k^4)^3\)[/tex]:
[tex]\[ (4 g^3 h^2 k^4)^3 = (4)^3 \cdot (g^3)^3 \cdot (h^2)^3 \cdot (k^4)^3 \][/tex]
Calculate each term:
[tex]\[ 4^3 = 64 \][/tex]
[tex]\[ (g^3)^3 = g^{3 \times 3} = g^9 \][/tex]
[tex]\[ (h^2)^3 = h^{2 \times 3} = h^6 \][/tex]
[tex]\[ (k^4)^3 = k^{4 \times 3} = k^{12} \][/tex]
So, the expression becomes:
[tex]\[ (4 g^3 h^2 k^4)^3 = 64 g^9 h^6 k^{12} \][/tex]

2. Simplify the fraction [tex]\(\frac{64 g^9 h^6 k^{12}}{8 g^3 h^2}\)[/tex]:
Separate the fraction into individual terms:
[tex]\[ \frac{64}{8} \cdot \frac{g^9}{g^3} \cdot \frac{h^6}{h^2} \cdot k^{12} \][/tex]
Simplify each fraction:
[tex]\[ \frac{64}{8} = 8 \][/tex]
[tex]\[ \frac{g^9}{g^3} = g^{9-3} = g^6 \][/tex]
[tex]\[ \frac{h^6}{h^2} = h^{6-2} = h^4 \][/tex]
[tex]\[ k^{12} \text{ remains as } k^{12} \][/tex]
So, the simplified fraction is:
[tex]\[ \frac{64 g^9 h^6 k^{12}}{8 g^3 h^2} = 8 g^6 h^4 k^{12} \][/tex]

3. Simplify [tex]\((h^5 k^3)^5\)[/tex]:
[tex]\[ (h^5 k^3)^5 = (h^5)^5 \cdot (k^3)^5 \][/tex]
Calculate each term:
[tex]\[ (h^5)^5 = h^{5 \times 5} = h^{25} \][/tex]
[tex]\[ (k^3)^5 = k^{3 \times 5} = k^{15} \][/tex]
So, the expression becomes:
[tex]\[ (h^5 k^3)^5 = h^{25} k^{15} \][/tex]

4. Combine the simplified terms:
[tex]\[ 8 g^6 h^4 k^{12} - h^{25} k^{15} \][/tex]

Therefore, the equivalent expression is:
[tex]\[ 8 g^6 h^4 k^{12} - h^{25} k^{15} \][/tex]

So, the correct option is:
[tex]\[ \boxed{8 g^6 h^4 k^{12} - h^{25} k^{15}} \][/tex]