Solving Quadratics with Square Roots

This video tutorial introduces solving quadratic equations using square roots, focusing on basic concepts. It covers solving equations like x^2 = 16, using the difference of squares method, and handling non-perfect squares by rounding to the nearest tenth. The tutorial also explains expressing solutions in simplest radical form, emphasizing the importance of understanding directions and recognizing perfect squares.

What terms are synonymous when solving quadratic equations?

• Coefficients, variables, and constants

• Zeros, roots, and algebraic solutions

• Exponents, bases, and powers

• Functions, derivatives, and integrals

Tags

CCSS.HSA-REI.B.4B

What is the first step in solving a quadratic equation by taking square roots?

• Add the constant to both sides

• Isolate the x squared term

• Divide by the coefficient of x squared

• Factor the equation

Tags

CCSS.HSA-REI.B.4B

What is the solution to the equation x squared equals 16?

• x = 16

• x = 4 or x = -4

• x = 4

• x = 2 or x = -2

Tags

CCSS.8.EE.A.2

What is the significance of the plus or minus sign in quadratic solutions?

• It represents an alternative method of solving

• It is used only for perfect square solutions

• It signifies an error in calculation

• It indicates the solution could be either positive or negative

Tags

CCSS.HSA-REI.B.4B

How can you solve an equation set equal to zero using factoring?

• By adding the constant to both sides

• By dividing each term by x

• By finding the square root of each term

• By separating the equation into two factors that equal zero

Tags

CCSS.HSA-REI.B.4B

What method can be used to solve x squared minus 16 equals 0?

• Completing the square

• Using the quadratic formula

• Graphing

• Factoring

Tags

CCSS.HSA-REI.B.4B

What is the approximate solution to the equation x squared equals 20, rounded to the nearest tenth?

• x = 5 or x = -5

• x = 4 or x = -4

• x = 20

• x = 4.5 or x = -4.5

Tags

CCSS.8.EE.A.2

How do you solve a quadratic equation involving a non-perfect square?

• By factoring

• By using the quadratic formula

• By completing the square

• By rounding the square root of the constant

Tags

CCSS.HSA-REI.B.4B

What does it mean to express an answer in simplest radical form?

• To express the answer as a decimal

• To round the answer to the nearest whole number

• To simplify the square root into its most reduced form

• To factor the equation completely

What is the simplified radical form of the square root of 20?

• 5 radical 4

• Radical 4 times radical 5

• 4 radical 5

• 2 radical 5