Question

Using the quadratic formula to solve 2x2 = 4x – 7, what are the values of x?

Answer 1

Answer:

Option C is correct.

Step-by-step explanation:

Given Quadratic Equation, 2x² = 4x - 7

We have to find value of x using quadratic formula.

Consider,

2x² = 4x - 7

2x² - 4x + 7 = 0

using Quadratic Formula

we get,

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

$x=\frac{-(-4)\pm\sqrt{(-4)^2-4(2)(7)}}{2\times2}$

$x=\frac{4\pm\sqrt{16-56}}{4}$

$x=\frac{4\pm\sqrt{-40}}{4}$

$x=\frac{4\pm\sqrt{40}\times\sqrt{-1}}{4}$

$x=\frac{4\pm\sqrt{40}i}{4}$

$x=\frac{4\pm4\sqrt{10}i}{4}$

$x=1\pm\sqrt{10}i$

Therefore, Option C is correct.

Answer 2

Answer:It’s. C

Step-by-step explanation:

On edge