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Simplify the expression: [tex]\left(-\frac{2x}{y^2}\right)^3[/tex]

Sagot :

Sure, let's solve the expression [tex]\(\left(-\frac{2 x}{y^2}\right)^3\)[/tex] step-by-step.

1. Starting with the innermost part of the expression:
[tex]\[ -\frac{2x}{y^2} \][/tex]

2. Since the exact values of [tex]\( x \)[/tex] and [tex]\( y \)[/tex] are not initially given, let's consider the provided numerical results to understand the handling:

We are given:
[tex]\[ \left(-\frac{2 \cdot 1}{1^2}\right)^3 = \left(-\frac{2 \cdot 1}{1}\right)^3 = (-2)^3 \][/tex]

3. First, calculate the intermediate result [tex]\(\left(-\frac{2x}{y^2}\right)\)[/tex]:
[tex]\[ -\frac{2 \cdot 1}{1^2} = -2 \][/tex]

4. Next, raise this intermediate result to the power of 3:
[tex]\[ (-2)^3 = (-2) \times (-2) \times (-2) \][/tex]

5. Perform the multiplication:
[tex]\[ (-2) \times (-2) = 4 \][/tex]
[tex]\[ 4 \times (-2) = -8 \][/tex]

6. Hence, the final result is:
[tex]\[ (-2)^3 = -8 \][/tex]

So the evaluated expression [tex]\(\left(-\frac{2 x}{y^2}\right)^3\)[/tex] yields the result [tex]\(-8\)[/tex] when [tex]\(x = 1\)[/tex] and [tex]\(y = 1\)[/tex].