Using the distributive property, remove the parentheses

Ответ:

kimseokjin92

10.03.2022

$Use:\\\\a(b-c)=ab-ac\\\\a^n\cdot a^m=a^{n+m}$

$10c^4(9-8c^2)=(10c^4)(9)-(10c^4)(8c^2)=90c^4-80c^{4+2}\\\\=\boxed{90c^4-80c^6}$

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jstoners

11.02.2020

The correct option is 2. The range of g(x) is all real numbers less than 0.

Step-by-step explanation:

The given function is

$f(x)=\frac{1}{2}(2.5)^x$

If a graph reflected across x axis, then

$(x,y)\rightarrow(x,-y)$

The function f(x) reflected across x-axis, so

g(x)=-f(x)

$g(x)=-\frac{1}{2}(2.5)^x$

It is an exponential function.

$g(x)\rightarrow -\infty\text{ as }x\rightarrow \infty$

$g(x)\rightarrow 0\text{ as }x\rightarrow -\infty$

Since the value of g(x) lies between $-\infty$ and 0, therefore the range of g(x) is all real numbers less than 0. Option 2 is correct.

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