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3 years ago

The second step in the process for factoring the trinomial x^2-3x-40 is to

Mathematics

2 answers:

pickupchik [31]3 years ago

8 0

Answer:

Second step x( x +5 ) -8 (x+ 5 ) in process of factoring .

Step-by-step explanation:

Given : Trinomial x²-3x-40 .

To find : The second step in the process for factoring .

Solution : We have x²-3x-40 .

On factoring x²+ 5x - 8x - 40 .

Taking common x from first two terms and -8 from last two terms.

x( x +5 ) -8 (x+ 5 ) .

Therefore , Second step x( x +5 ) -8 (x+ 5 ) in process of factoring .

baherus [9]3 years ago

4 0

I think it's to find the sum of the factors of −40.

Hope this helps !

Photon

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irina1246 [14]

Answer:

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Step-by-step explanation:

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$A_{2}=\left[\begin{array}{cccc}1&3&2&2\\-7&-3&5&-8\\4&6&1&1\\3&1&-1&1\end{array}\right]$

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$y=\frac{det(A_{2}) }{det(A)}$

Find the value of the determinant of each matrix, and divide:

$y==\frac{\left|\begin{array}{cccc}1&3&2&2\\-7&-3&5&-8\\4&6&1&1\\3&1&-1&1\end{array}\right|}{\left|\begin{array}{cccc}1&1&2&2\\-7&-3&5&-8\\4&1&1&1\\3&7&-1&1\end{array}\right|} =\frac{158}{-579}$