Two students factored 2x2 + 6x – 20. Keiko said that the factorization was (2x – 4)(x + 5). Ray gave the factorization as (x – 2)(2x + 10). Confirm that both of these factorizations are correct. Then explain why they are not complete.
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U can prove these by some random method
Answered by
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Answer:
(2x - 4)(x - 5) is correct answer
Step-by-step explanation:
2x²+ 6x- 20
2x²+10x-4x - 20
2x( x+5) - 4(x+5)
(2x-4) ( x+5)
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