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MAT11L06 Solving quadratic equations

Authored by Woodridge Connect

Mathematics

9th - 12th Grade

Used 1+ times

MAT11L06 Solving quadratic equations
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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What should you do first in solving this equation?
x2 + 6x - 13 = 3

Get factored form
Write down: a=1, b=6, c=-13
Make it equal 0 by subtracting 3 on each side
Type it all in a calculator.

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Solve by factoring: x2 = 7x + 18

-7 or -18

9 or 2

9 or -2

2 or 7

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Solve the Following Quadratic Equations

2x2+5x−12=02x^2+5x-12=0  ?

𝑥 = 4 or -7

𝑥 = -2 or 14

𝑥 = -4 or 3/2

𝑥 = -25 or 28

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Solve the Following Quadratic Equations

9x2−4=09x^2-4=0  ?

𝑥 = -4 or 1/9

𝑥 = 4 or 9

𝑥 = 3/2 or -3/2

𝑥 = 2/3 or -2/3

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which is the standard form for a quadratic equation?

x=−b±b2−4ac2ax=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

ax2+bx+c=0ax^2+bx+c=0

y=a(x−h)2+ky=a\left(x-h\right)^2+k

a2+b2=c2a^2+b^2=c^2

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

x2−7x=0x^2-7x=0  

Solve by the method of your choice.

x = 7 only

x = 0 only

x = 0 and 7

There is no real answer for this equation.

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Solve by factoring: x2 - 9x + 20 =0

x = -2, 10

x = -5, -4

x = 4, 5

Not factorable

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