Solving for X with Squares

Which of the following cannot be solved with the Square Root method?

• x²-9=0

• x²-15=0

• x²-9x=0

• 6x²-15=0

Tags

CCSS.HSA-REI.B.4B

What is the first step to solving x²-9x=10 with Factoring?

• Look for 2 numbers whose sum is -9 and product is 10.

• Subtract 10 from both sides.

• Divide -9 by 2 and square the answer.

• Look for 2 numbers whose sum is 10 and product is -9.

Tags

CCSS.HSA-REI.B.4B

When using the Quadratic Formula method, what are a, b, and c for the equation: 9x²-x+7=2?

• a=9, b = -1, c =7

• a=1, b = 0, c =7

• a=9, b = -1, c =5

• a=9, b = 7, c =2

Tags

CCSS.HSA-REI.B.4B

When using the Completing the Squares method, what number would fill in the blank:

x²+12x ______ = 8 + _______

• 6

• 36

• 12

• 16

Tags

CCSS.HSA-REI.B.4B

2x²=100

• x = √25

• x = ±5√2

• x = √100

• x = ±√5

Tags

CCSS.8.EE.A.2

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form

• Write down: a=1, b=6, c=-13

• Make it equal 0 by subtracting 3 on each side

• Type it all in a calculator.

Tags

CCSS.HSA-REI.B.4B

Solve: x² - 2x = 3

(just give the POSITIVE answer)

Mathematical Equivalence

OFF

Tags

CCSS.8.EE.A.2

• 8

• 64

• 16

• 4

• 256

Tags

CCSS.HSA-REI.B.4B

Mathematical Equivalence

ON

Tags

CCSS.HSA-REI.B.4B

Solve: x² + 14x = 51

(just give the NEGATIVE answer)

Mathematical Equivalence

OFF

Tags

CCSS.HSA-REI.B.4B