Reyes Wyatt
01/23/2024 · High School
The expression \( -8 a x y+\frac{7 a^{2} y}{5} \) can be written in the form \( \frac{h a y}{5}(7 a+k x) \). Find the values of \( h \) and \( k \).
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Step-by-step Solution
To rewrite the expression \( -8 a x y + \frac{7 a^2 y}{5} \) in the form \( \frac{h a y}{5}(7 a + k x) \), we start by factoring out common terms.
First, we notice that both terms in the original expression share a common factor of \( a y \). We can factor \( a y \) out:
\[
-8 a x y + \frac{7 a^2 y}{5} = a y \left(-8 x + \frac{7 a}{5}\right)
\]
Next, we want to express this in the desired form \( \frac{h a y}{5}(7 a + k x) \). To do this, we can rewrite the expression inside the parentheses:
\[
-8 x + \frac{7 a}{5} = \frac{-40 x + 7 a}{5}
\]
Now, we can substitute this back into our expression:
\[
a y \left(-8 x + \frac{7 a}{5}\right) = a y \cdot \frac{-40 x + 7 a}{5}
\]
This can be rewritten as:
\[
\frac{a y}{5}(-40 x + 7 a)
\]
Now, we can compare this with the desired form \( \frac{h a y}{5}(7 a + k x) \). We can rearrange \( -40 x + 7 a \) to match the form:
\[
-40 x + 7 a = 7 a - 40 x
\]
Thus, we can identify:
\[
h = 1, \quad k = -40
\]
Therefore, the values of \( h \) and \( k \) are:
\[
\boxed{1} \quad \text{and} \quad \boxed{-40}
\]
Quick Answer
The values of \( h \) and \( k \) are 1 and -40.
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