Math

81x^2 - 100 = 0

Asked by AnneS2 on 01 Apr 05:14

Last updated by anonymous on 02 Apr 19:31

1 Answers

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Answered by CherieS on 02 Apr 19:31

81x^2 - 100 = 0

(9x )(9x ) ( +10)( -10)

(9x+10) (9x-10)

Check:

(9x+10) (9x-10)

(9x)(9x) (9x)(-10) (10)(9x) (10)(-10)

81x2 -90x +90x -100

81x2 -100