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Larsen
Mathematics
13 February, 13:26
Factor the following expression:
x2-4x-21
+3
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1
)
Jonathan Curtis
13 February, 13:50
0
(x - 7) (x + 3)
Step-by-step explanation:
Step 1: You need to find out what to numbers add up to - 4 and multiply - 21?
-7 and 3
Step 2: Just rewrite the expression using the above and you're done!
(x - 7) (x + 3)
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