Modeling and Analyzing Quadratic Functions: Quadratic Equations — Test

Question 1

What are the solutions of the quadratic equation open paren x plus 3 close paren squared is equal to 49 ?

Revolt · Accepted Answer

x is equal to 4 and x is equal to negative 10

Question 2

Which shows the correct substitution of the values A , b , and c from the equation 0 is equal to 4 x squared plus 2 x minus 1 into the quadratic formula below? Quadratic formula: x is equal to the fraction with numerator negative b plus or minus square root of b squared minus 4 A c end root and denominator 2 A

Revolt · Accepted Answer

x is equal to the fraction with numerator negative 2 plus or minus square root of 2 squared minus 4 4 negative 1 end root and denominator 2 times 4

Question 3

Which equation represents x , the side length of the greater square?

Revolt · Accepted Answer

x squared plus open paren x minus 2 close paren squared is equal to 100

Question 4

What is the value of A ?

Revolt · Accepted Answer

10

Question 5

Which equations can be used to find the lengths of the legs of the triangle? Choose three correct answers.

Revolt · Accepted Answer

x squared plus 2 x minus 48 is equal to 0; x squared plus open paren x plus 2 close paren squared is equal to 100; 0 point 5 x open paren x plus 2 close paren is equal to 24

Modeling and Analyzing Quadratic Functions: Quadratic Equations — Test Answers

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