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Update : Solve 7x^2+4x-3=3

Factorise x^2+8x+12    

asked Aug 19, 2014 in ALGEBRA 2 by anonymous

1 Answer

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(1)

The equation is 7x2 + 4x - 3 = 3

7x2 + 4x - 3 - 3 = 0

7x2 + 4x - 6 = 0

Find the roots of the quadratic equation by using the formula:

image

Let a = 7 , b = 4 , c = -6

image

The solution is -2±√(46) / 7.

(2)

The equation is x2 + 8x + 12

x2 + 2x + 6x + 12

x(x + 2) + 6(x + 2)

(x + 2)(x + 6)

The solution is (x + 2)(x + 6).

answered Aug 19, 2014 by anonymous
edited Aug 19, 2014 by bradely

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