Forming and solving quadratic equations
Authored by Robert Muthomi
Chemistry
1st - 4th Grade
CCSS covered
Used 3+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The width of a classroom is 2m less than the length, and the area is 180m2. Identify the correct equation.
x2 - 2 = 180
x(x - 2) = 180
x(x - 2) + 180 = 0
x2 - 2x = 0
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A girl is 3 years younger than her brother. The product of their ages is 238. If her brother's age is x, then identify the correct equation.
x - 3 * x = 238
x2 - 3x + 238 = 0
x2 + 3x + 238 = 0
x (x - 3) = 238
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The perimeter of a rectangular classroom is 46m and it's area is 130m2. Choose the correct pair of equations which describe the situation.
xy = 130 and x + y = 46
xy = 130 and 2x + 2y = 46
xy = 46 and x + y = 130
x2 + y = 156
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When the numbers 10 and 19 are both increased by the same amount, the product of the new numbers is 360. Describe the situation algebraically.
(10 + x) (19 + x) = 360
10 + 19 + 2x = 360
10 x 19 = 360
(x + 10) (x + 19) = 0
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve the following quadratic equation...
x2 + 3x + 2 = 0
x = -1
x = -2
x = 1
x = 2
x = -1
x = 2
x = 1
x = -2
Tags
CCSS.HSA-REI.B.4B
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Solve using the Quadratic Formula
2x2 + 7x − 15 = 0
x = −1.5, 5
No Solution
x = −5, 1.5
x = 0.7, 5
Tags
CCSS.HSA-REI.B.4B
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Select the solutions to the equation
2x2 - 13x + 15 = 0
x = 1.5
x = 5
x = - 6
x = 2
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