3 years ago

Factor the trinomial: 4x2 - 8x - 5

2 answers:

6 0

Correct answer is A.

$(2x + 1)(2x - 5)
\\2x(2x-5)+1(2x-5)
\\4x^2-10x+2x-5
\\4x^2-x-5$

5 0

you can always check by expanding the answers to see what matches

well, you can verify yourself by expanding the answer to check what matches

4x2 - 8x - 5 = 4x2 + 2x -10x -5
= 2x(2x+1) - 5(2x+1)
= (2x+1)(2x-5)

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