3 years ago

In math class, Sam said two different numbers can have the same absolute value. Is he right? Why or ehy not?

1 answer:

7 0

<h2>Answer:</h2><h2>Yes!.</h2><h2>If the domain is real number for each absolute value, there are two different one can have with same absolute value </h2>

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Given that f(x) = x2 + 5x – 14 and g(x) = x + 7, find (fºg)(x) and express

mel-nik [20]

Answer:

We get $\mathbf{(fog)(x)=x^3+12x^2+21x-98}$

Step-by-step explanation:

We are given:

$f(x) = x^2 + 5x - 14 \\ g(x) = x + 7$

We need to find $(f o g)(x)$

We know that: $(fog)(x)=f(x)\times g(x)$

We multiply the both terms i.e. f(x) and g(x) to get our answer.

$(fog)(x)\\=f(x)\times g(x)\\=(x^2+5x-14)(x+7)\\=(x^2+5x-14)(x)+(x^2+5x-14)(7)\\=x^3+5x^2-14x+7x^2+35x-98\\Combining\:like\:terms:\\=x^3+5x^2+7x^2-14x+35x-105\\=x^3+12x^2+21x-98$

So, we get $\mathbf{(fog)(x)=x^3+12x^2+21x-98}$

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3 years ago

In math class, Sam said two different numbers can have the same absolute value. Is he right? Why or ehy not?​

In math class, Sam said two different numbers can have the same absolute value. Is he right? Why or ehy not?