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Evaluate [tex]\frac{3(x+4)(x+1)}{(x+2)(x-2)}[/tex] for [tex]x=4[/tex].

A. -10
B. 10
C. [tex]\frac{10}{3}[/tex]
D. [tex]-\frac{10}{3}[/tex]


Sagot :

Let's evaluate the expression [tex]\(\frac{3(x+4)(x+1)}{(x+2)(x-2)}\)[/tex] for [tex]\(x = 4\)[/tex].

1. Substitute [tex]\(x = 4\)[/tex] into each part of the expression:

[tex]\(\text{Numerator: } 3(x+4)(x+1)\)[/tex]
[tex]\[ 3(4+4)(4+1) \][/tex]

[tex]\(\text{Denominator: } (x+2)(x-2)\)[/tex]
[tex]\[ (4+2)(4-2) \][/tex]

2. Simplify the expressions inside the parentheses:

[tex]\(\text{Numerator: } 3(8)(5)\)[/tex]
[tex]\[ 3 \cdot 8 \cdot 5 = 120 \][/tex]

[tex]\(\text{Denominator: } 6 \cdot 2\)[/tex]
[tex]\[ 6 \cdot 2 = 12 \][/tex]

3. Calculate the final result by dividing the numerator by the denominator:

[tex]\[ \frac{120}{12} = 10 \][/tex]

Therefore, the value of [tex]\(\frac{3(x+4)(x+1)}{(x+2)(x-2)}\)[/tex] for [tex]\(x=4\)[/tex] is [tex]\(10\)[/tex]. Thus, the correct answer is:

B. 10