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2- Answer the following question:
a. What are the four different ways to solve a quadratic function? (5 points)
b. Solvex² - 4x - 11 = 0 using completing the square. You must show all the steps. (10 points)
c. Solve 2x² + 16x + 24 = 0 using the quadratic formula. You must show all the steps. (10 points)

2 Answer The Following Question A What Are The Four Different Ways To Solve A Quadratic Function 5 Points B Solvex 4x 11 0 Using Completing The Square You Must class=

Sagot :

upandover

A. Four ways to solve a quadratic equation

---Factoring

---Completing the square

---Quadratic equation

---Graphing

B. Solve the equation by completing the square

x^2 - 4x - 11 = 0

x^2 - 4x = 11

x^2 - 4x + 4 = 11 + 4

(x - 2)^2 = 15

x - 2 = +/- 15

x - 2 = 15 || x = 17

x - 2 = -15 || x = -13

C. Solve the equation using the quadratic formula

Quadratic formula = [tex]\frac{-b +/-\sqrt{b^2 - 4ac} }{2a}[/tex]

Equation = 2x^2 + 16x + 24 = 0

a = 2

b = 16

c = 24

[tex]\frac{-16 +/- \sqrt{16^2 - 4(2)(24)} }{2(2)}[/tex]

[tex]\frac{-16 +/- \sqrt{256 - 192} }{4}[/tex]

[tex]\frac{-16 +/- \sqrt{64} }{4}[/tex]

[tex]\frac{-16 +/- 8 }{4}[/tex]

[-16 + 8] / 4 = -2

[-16 - 8] / 4 = -6

x = -6, -2

Hope this helps!

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