Completing the square

What do you do to the b value to correctly complete the square?

• square it
• divide it by 2 and square the result
• divide it by 2 and take the square root of the result
• divide it by 2 only

Tags

CCSS.HSA-REI.B.4B

Complete the square for

x² - 12x + ____

• 144

• 36

• - 36

• 24

Tags

CCSS.HSA-REI.B.4B

Given the perfect square trinomial, identify the equivalent expression

x²-18x+81

• (x-18)²

• (x-9)²

• (x+81)²

• (x+9)²

Tags

CCSS.HSA.APR.C.4

Create a Perfect Square Trinomial
x² + 6x + ____

• 6
• -6
• 9
• -9

Tags

CCSS.HSA-REI.B.4B

What is the first step to solving THIS equation by completing the square?
a² + 10a + 21 = 0

• 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

Tags

CCSS.HSA-REI.B.4B

When Completing the Square what form should our final answer take?

• (x + a)² + b

• (x² + a) + b

• (x² + a)² + b

• none of these

Find the value of "c" that completes the square.

 $x_{ }^2+8x+c$  

• -4

• 4

• 8

• 16

Tags

CCSS.HSA-REI.B.4B

Find the value of "c" that completes the square.

 $a^2-22a+c$  

• -121

• 121

• 11

• -11

Tags

CCSS.HSA-REI.B.4B

Find the value of "c" that completes the square.

 $t^2+7t+c$  

•  $\frac{7}{2}$  

• 3.5

•  $\frac{49}{4}$  

•  $\frac{49}{2}$  

Tags

CCSS.HSA-REI.B.4B

Find the value of "c" that completes the square. Then rewrite the trinomial as a perfect square.

 $n^2-20n+c$  

•  $10;\ \left(n-10\right)^2$  

•  $100;\ \left(n-10\right)^2$  

•  $100;\ \left(n+10\right)^2$  

•  $10;\ \left(n+10\right)^2$  

Tags

CCSS.HSA-REI.B.4B