How do you factor 20x5−5

hunterofdeath63

hunterofdeath63

Answered

2021-12-18

How do you factor 20x55

Answer & Explanation

nghodlokl

nghodlokl

Expert

2021-12-19Added 33 answers

20x55=5(4x21)=5(2x1)(2x+1)
Explanation:
So we have 20x25=5(4x21); dividing thru by 5
5(4x21)
And 4x21 is the difference between 2 squares, 2x and 1
(4x21)=(2x1)(2x+1)
Putting it all together:
20x25=5(2x1)(2x+1)
So there are roots at ±12
Travis Hicks

Travis Hicks

Expert

2021-12-20Added 29 answers

20x25
Factor 5 out of 20x25
5(4x21)
Rewrite 4x2 as (2x)2.
5((2x)21)
Rewrite 1 as 12
5((2x)212)
5(2x+1)(2x1)
RizerMix

RizerMix

Expert

2021-12-29Added 437 answers

Hi, Does anybody know how to do this question? Thank-you

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