Mschlagel Mschlagel

23-03-2017
Mathematics

contestada

1. 4x2 + 4x + 1 = (2x + 1)2
True or False

2. Solve the equation by using factoring: x2 -14x + 49 =0
A. 14
B. 7
C. no solution
D. 2

Respuesta :

23-03-2017

1.the answer is (2x + 1)^2

2. 7

Answer Link

Аноним Аноним

23-03-2017

1. It is true.

2. x^2 - 14x + 49 = 0

x^2 - 7x - 7x + 49 = 0

x(x-7) - 7(x-7) = 0

(x-7)(x-7) = 0

x = 7

Answer is B.

Hope it helps!

Answer Link

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