Use the difference of two squares forumula to factor. 81x^2 - 1

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Asked 3/14/2013 11:20:55 PM

Updated 4/30/2015 2:52:10 AM

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This answer has been confirmed as correct and helpful.

Expert answered|armageddon|Points 398|

Question

Asked 3/14/2013 11:20:55 PM

Updated 4/30/2015 2:52:10 AM

1 Answer/Comment

This answer has been confirmed as correct and helpful.

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4x^2 - 25

= (2x)^2 - 5^2

= (2x - 5)(2x + 5)

= (2x)^2 - 5^2

= (2x - 5)(2x + 5)

Added 4/30/2015 2:37:51 AM

This answer has been confirmed as correct and helpful.

Confirmed by Andrew. [4/30/2015 2:52:19 AM]

Add or substract the follow polynomials as indicated: (5.9x^3 +3.4x^2 - 7) - (2.9x^3 -9.6x^3) - (9.6x^2 + 3)
**Weegy:** (5.9x^3 +3.4x^2 - 7) - (2.9x^3 -9.6x^3 - 9.6x^2 + 3) = 12.6x^3+13.x^2-10 **User:** multiply. (6x +7)(3x+2) **Weegy:** (6x+7)(3x+2) = 18x^2+33x+14 **User:** Multiply. (4x + 1)(2x^2 + x + 1) **Weegy:** 5/2x+1/4x=7/4+x SOLUTION:
5/2x+1/4x-x=7/4 >>
(5/2+1/4-1)x=7/4 >>
(7/4)x=7/4 >>
x=(7/4)/(7/4) >>
x=1 (More)

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Expert Answered

Updated 4/30/2015 2:33:25 AM

1 Answer/Comment

(4x + 1)(2x^2 + x + 1)

=8x^3+2x^2+4x^2+x+4x+1

=8x^3+6x^2+5x+1

=8x^3+2x^2+4x^2+x+4x+1

=8x^3+6x^2+5x+1

Added 4/30/2015 2:33:25 AM

This answer has been confirmed as correct and helpful.

Confirmed by Andrew. [4/30/2015 2:53:40 AM]

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