2 years ago

Rewrite the equation by completing the square. x2 - 6x - 16 = 0

Mathematics

1 answer:

Zolol [24]2 years ago

3 0

Answer: x = 8, -2

Step-by-step explanation:

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3 years ago

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How do you solve these problems?

Rzqust [24]

A)

$\bf log_4(x)=3\\\\
-----------------------------\\\\
log_{{ a}}{{ a}}^x\implies x\qquad \qquad 
\boxed{{{ a}}^{log_{{ a}}x}=x}\impliedby 
\begin{array}{llll}
\textit{we'll use this}\\
\textit{cancellation rule}
\end{array}\\\\
-----------------------------\\\\
4^{\cfrac{}{}log_4(x)}=4^3\implies x=4^3$

b)

$\bf 3^{2y}=81\qquad 
\begin{cases}
81=3\cdot 3\cdot 3\cdot 3\\
\qquad 3^4
\end{cases}\implies 3^{2y}=3^4\impliedby 
\begin{array}{llll}
\textit{same base}\\
exponents\\
must\ be\\
the\ same
\end{array}
\\\\\\
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4 years ago

What is the sum of 5/12 and 1/3. Write the answer in simplest form

beks73 [17]

Answer:

Step-by-step explanation: $\frac{5}{12}$