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NemiM [27]
3 years ago
13

What is the factor for x^2-4x-21

Mathematics
2 answers:
Darina [25.2K]3 years ago
7 0
Hey there Alissia!

\Longrightarrow  \left[\begin{array}{ccc}\boxed{\boxed{ Factoring \  x^2-4x-21 }}\end{array}\right] \\ \\  \Longrightarrow \left[\begin{array}{ccc}\boxed{\boxed{Multiply \ the \ coefficient \ of \ the \ first \ term \ by . . . . .}}\end{array}\right] \\ \\ \ \ \  \ \ \Longrightarrow \boxed{ by \ the  \ constant \ ( 1 * -21 = -21) } \\ \\     \left[\begin{array}{ccc} Add \ up \ the \ four \ terms \ of step \ 4 \\ \\    (x+3)  *  (x-7) \\\end{array}\right]  \\ \\ \\ 


(Final \ result) \\ \\  \Longrightarrow (x + 3) * (x - 7) \Longleftarrow \\ \\ Hope \ this \ help \ you!




7nadin3 [17]3 years ago
5 0
(x+7) (x-3) is the anwer

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