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April 1, 2015

April 1, 2015

Posted by **Urgen please help** on Thursday, June 14, 2012 at 4:22pm.

4x2 = 19x + 5

x =

x =

- ALGEBRA -
**Henry**, Saturday, June 16, 2012 at 2:36pm4x^2 = 19x + 5.

4x^2 - 19x - 5 = 0

Factor using AC method or Quad. Formula:

AC = 4 * (-5) = -20 = 1*(-20)

4x^2 + (x-20x) - 5 = 0

Arrange the tems to form 2 factorable binomials:

(4x^2+x) + (-20x-5) = 0

x(4x+1) - 5(4x+1)

(4x+1)(x-5) = 0

4x+1 = 0

4x = -1

X = -1/4.

x-5 = 0

X =5.

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