Question

Resolver: (2x + 1) (7x + 3) = (x + 1) (14x + 6)
a) -2/7 b) -1/7 c) -4/7 d) -3/7


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Answer 1

Respuesta:

D) -3/7

Explicación paso a paso:

(2x + 1) (7x + 3) = (x + 1) (14x + 6)

14x2 +6x+7x+3=14x 2 +6x+14x+6

14x2 +13x+3=14x  2 +20x+6

13x+3=20x+6

3=20x+6−13x

3=7x+6

3−6=7x

−3=7x

x= -3/7

Espero que te sirva :)

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Answer 2

Respuesta:

E͜͡s͜͡ l͜͡a͜͡ d͜͡. -3/7

Explicacion paso por paso:

Resolver: (2x + 1) (7x + 3) = (x + 1) (14x + 6)a) -2/7 b) -/7 c) -4/7 d) -3/7

[tex](2x + 1)(7x + 3) = (x + 1)(14x + 6) \\ 14 {x}^{2} + 6x + 7x + 3 = 14 {x}^{2} + 6x + 14x + 6 \\ 14 {x}^{2} + 13x + 3 = 14 {x}^{2} + 20x + 6 \\ 3 - 6 = 20x - 13x \\ - 3 = 7x \\ \frac{ - 3}{7} = x[/tex]

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