Can someone help me with these two problems please!!!!!

Mathematics

1 answer:

forsale [732]3 years ago

5 0

Answer:

The question at the top is:

Factor

x 2 + 2 x − 63

using the AC method.

( x − 7 ) ( x + 9)

WHICH THE ANSWER IS (B)

The question at the bottom is:

Factor

x 2 + 18 x + 80

using the AC method.

( x + 8 ) ( x + 10 )

WHICH IS ANSWER (C)

Step-by-step explanation:

Hope this helped! :)

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$\bf n^{th}\textit{ term of an arithmetic sequence}
\\\\
a_n=a_1+(n-1)d\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
d=\textit{common difference}\\
----------\\
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n=17
\end{cases}
\\\\\\
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\\\\\\
a_{17}=10+64\implies a_{17}=74\\\\
-------------------------------$

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\begin{cases}
n=n^{th}\ term\\
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n=17
\end{cases}
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