Lesson Example Discussion Quiz: Class Homework |
Quiz Discussion |
Title: Roots of the quadratic equation |
Grade: 9-a Lesson: S1-L6 |
Explanation: Let us discuss a few questions on this topic and review the answers to every question. |
Quiz: Discussion in Class
| Problem Id | Question | Problem | Options |
|---|---|---|---|
Steps 1 |
Find the roots of the quadratic equation |
\$ 2x^2 - 4x - 8 = 0 \$ |
A) \$(1+\sqrt(5), 1-\sqrt(5))\$ B) \$(1+\sqrt(5), -\sqrt(5))\$ C) \$(\sqrt(5), 1-\sqrt(5))\$ D) \$(\sqrt(5), -\sqrt(5))\$ |
Steps 2 |
Find the roots of the quadratic equation |
\$ (x+3)(x+7) = 0 \$ |
A) \$(3,-7)\$ B) \$(-3,-7)\$ C) \$(3,7)\$ D) \$(3,-7)\$ |
Steps 3 |
Find the roots of the quadratic equation |
\$2x^2 -8x + 4 = 0\$ |
A) \$(2+\sqrt(2),-2-\sqrt(2))\$ B) \$(-2+\sqrt(2),2-\sqrt(2))\$ C) \$(2+\sqrt(2),2-\sqrt(2))\$ D) \$(2+\sqrt(2),4-\sqrt(2))\$ |
Steps 4 |
Find the roots of the quadratic equation |
\$ 2x^2 -x -1=0 \$ |
A) \$( 1 , 1/2 )\$ B) \$( -1 , 1/2 )\$ C) \$( -1 , -1/2 )\$ D) \$( 1 , -1/2 )\$ |
Steps 5 |
Find the roots of the quadratic equation |
\$ 5x^2 = -5 \$ |
A) \$( 1 , 1 )\$ B) \$( 1 , -i )\$ C) \$( i , \sqrt(-1) )\$ D) \$( +i , -i )\$ |
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