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Factor using ac-method and factor completely, 25x²-30x--40  (help)

Factor using ac-method and factor completely, 25x²-30x--40  (help)
asked 32.2k views
2 votes
Factor using ac-method and factor completely, 25x²-30x--40  (help)

asked
User Kadeshpa
by
7.9k points

2 Answers

5 votes
Answer :
25x^2-30x-40 \\ =5(5x^2-10x+4x-8) \\ =5[5x(x-2)+4(x-2)] \\ =5(x-2)(5x+4)
answered
User Alexander Neumann
by
8.5k points
4 votes

25x^2-30x-40=\\ 5(5x^2-6x-8)=\\ 5(5x^2-10x+4x-8)=\\ 5(5x(x-2)+4(x-2))=\\ 5(5x+4)(x-2)
answered
User Miga
by
8.4k points
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