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Evaluate the expression [tex]$(x+5) \cdot (x-5)^2$[/tex] for [tex]$x = 3$[/tex].

A. -32
B. -16
C. 16
D. 32


Sagot :

To evaluate the expression [tex]\((x+5) \cdot (x-5)^2\)[/tex] for [tex]\(x = 3\)[/tex], follow these steps:

1. Substitute [tex]\(x\)[/tex] with 3:
[tex]\[ (3 + 5) \cdot (3 - 5)^2 \][/tex]

2. Simplify inside the parentheses:
[tex]\[ 3 + 5 = 8 \quad \text{and} \quad 3 - 5 = -2 \][/tex]

3. Square the result of [tex]\((3 - 5)\)[/tex]:
[tex]\[ (-2)^2 = 4 \][/tex]

4. Multiply the simplified results:
[tex]\[ 8 \cdot 4 \][/tex]

5. Calculate the product:
[tex]\[ 8 \cdot 4 = 32 \][/tex]

Thus, the value of the expression [tex]\((x+5) \cdot (x-5)^2\)[/tex] for [tex]\(x = 3\)[/tex] is:
[tex]\[ 32 \][/tex]

From the given options, the correct answer is:
32