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Mathematics
06.05.2021 10:06
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Line l is tangent to circle P. Which of the following statements is not necessarily

Line l is tangent to circle P. Which of the following statements is not necessarily true?
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igocrazy594
igocrazy594
5,0(11 marks)

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.

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