Solving Quadratics Method

Jessua chooses to factor the following quadratic in order to solve:x^2-14x+49=0 He gets (x-7)^2=0 What does this step tell Jessua about the number of x-intercepts that this quadratic has?

• One

• Two
  

• Zero

Yadiel, Elijah, and Jonathan were making a video on Completing the Square. What is their first step to solving this equation?

• Set the equation equal to zero

• Divide 10 by 2 and add the result to both sides

• Add a² and 10a together

• Subtract the 21

Lised tells Jazmin that solving a quadratic by the Completing the Square method will give you the same solutions as when you solve the same problem using the Quadratic Formula. Is she correct?

• No, Lised is not correct because only Factoring and Completing the Square result in the same solution.

• Yes, Lised is correct because all methods of solving quadratics result in the same solutions.

• Yes, Lised is correct is because Completing the Square and the Quadratic Formula result in the same solution.

• No, Lised is not correct because the three methods of solving quadratics will result in three different solutions.

Tarae, Charlotte, and Odaluis decide to work on the same quadratic equation using three different methods: solving by factoring, completing the square, and solving by the Quadratic Formula. What will the result be?

• They will get the same solutions from the factoring and completing the square, but a different solution when using the Quadratic Formula.

• All three solutions will be different.

• All three solutions will be the same.

• They will get the same solutions from using the Quadratic Formula and Completing the Square, but a different answer from solving by factoring.

Jareem, a Quadratic Formula Ninja, is helping his little sister solve an equation by the Quadratic Formula. Here is her work: 4x^2-12x-112=0 x= - (? ) ± √ (-12)^2-4(4)(-112) 2(4) What number value is missing in this step?

Curtis, Cadeen, Billal, and Billol are competing for the Complete-the-Square-King Crown of 2020. What is the first step they will take to complete the square in this equation: 5x^2+20x-37=7 

• Add 37 to both sides of the equation

• Factor GCF of 7

• Set the equation equal to zero
  

• Identify the a, b, & c values to be substituted into the Complete the Square formula

Find the zeros of this quadratic.

• b=4/5, b=3

• b=4, b=-3

• b=1/5, b=3

• b=4/5, b=-3

Solve the quadratic equation by factoring
a² + 10a + 21 = 0

• ± √21

• -3 , -7

• 3 , 7

• 28 , -7

• A
• B
• C
• D

Solve
a² + 2a - 24 = 0

• a = -6, 4

• a = 6, -4

• a = 12, -2

• a = 8, -3