7x square- 20x-3 solving ax square+bx+c=0 by factoring

1 answer:

4 0

We first have to find the factors of 7 and -3 and see which ones add up to -20.

factors of 7 are 1 and 7 factors of -3 are -1 and 3
7 and 1 -3 and 1

therefore, we get (x - 3) (7x + 1)

we can use the FOIL method to verify the answer.

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3 years ago

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If A=<img src="https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%264%5C%5C5%266%5C%5C%5Cend%7Barray%7D%5Cright%5D"

cestrela7 [59]

<h3><u>Given :- </u></h3>

$A=\left[\begin{array}{ccc}1&4\\5&6\\\end{array}\right]$
a $_{ij}$ = 6

Value of i and j

<h3><u>Solution:- </u></h3>

$\longrightarrow$ In a matrix the the the position of an element is determined by using a $_{ij}$ where i the number of row and j is number of column in which the element is.