Solving Quadratic Equations: Square Root Property Answers
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1
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What are the solutions to the quadratic equation 4x2 = 64?
A
x = −16 and x = 16B
x = −8 and x = 8C
x = −4 and x = 4D
x = −2 and x = 21
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Jillian is trying to save water, so she reduces the size of her square grass lawn by 8 feet on each side. The area of the smaller lawn is 144 square feet. In the equation(x – 8)2 = 144, x represents the side measure of the original lawn.
A
4 feet by 4 feetB
8 + feet by 8 +
C
8 feet by 8 +
D
20 feet by 20 feet2
Theo started to solve the quadratic equation (x + 2)2 – 9 = –5. He added 9 to both sides and the resulting equation was(x + 2)2 = 4. Next, he took the square root of each side.Which was the resulting equation of that step?
A
x + 2 = ±4B
x + 2 = ±2C
x + 2 = ±8D
x + 2 = ±162
What are the solution(s) to the quadratic equation 50 – x2 = 0?
A
x = ±2
B
x = ±6
C
x = ±5
D
no real solution3
What is the first step in solving the quadratic equation x2 – 40 = 0?
A
taking the square root of both sides of the equationB
adding 40 to both sides of the equationC
squaring both sides of the equationD
subtracting 40 from both sides of the equation5
What are the solutions to the quadratic equation x2 – 16 = 0?
A
x = 2 and x = –2B
x = 4 and x = –4C
x = 8 and x = –8D
x = 16 and x = –16Did you find these answers helpful?
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