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What value of [tex]k[/tex] makes the equation true?
[tex]\[
(5a^2 b^3)(8a^4 b) = 30a^6 b^4
\][/tex]

A. 2
B. 3
C. 4
D. 8


Sagot :

Let's solve the given algebraic equation step by step to determine the value of [tex]\( k \)[/tex] that makes the equation true.

Given equation:
[tex]\[ \left(5 a^2 b^3\right)\left(8 a^4 b\right) = 30 a^6 b^4 \][/tex]

First, we'll simplify the left-hand side of the equation:

[tex]\[ \left(5 a^2 b^3\right)\left(8 a^4 b\right) \][/tex]

Combine the numerical coefficients:
[tex]\[ 5 \times 8 = 40 \][/tex]

Now, combine the powers of [tex]\( a \)[/tex]:
[tex]\[ a^2 \times a^4 = a^{2+4} = a^6 \][/tex]

And combine the powers of [tex]\( b \)[/tex]:
[tex]\[ b^3 \times b = b^{3+1} = b^4 \][/tex]

So, the left-hand side simplifies to:
[tex]\[ 40 a^6 b^4 \][/tex]

Therefore, the equation becomes:
[tex]\[ 40 a^6 b^4 = 30 a^6 b^4 \][/tex]

Now, let's compare both sides:
[tex]\[ 40 a^6 b^4 \neq 30 a^6 b^4 \][/tex]

Since the coefficients [tex]\( 40 \)[/tex] and [tex]\( 30 \)[/tex] are not equal, the given equation is not true for any value of [tex]\( k \)[/tex].

None of the given values (2, 3, 4, 8) can make the equation true because the left-hand side simplifies to a different numerical coefficient than the right-hand side.

Therefore, there is no value of [tex]\( k \)[/tex] that makes the equation true. Hence, the correct answer is:

None of the values