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1

What number should be added to the expression x^{2}-15x to result in an expression equivalent to a perfect square?

-7.5

7.5

-56.25

56.25

A.REI.4.a

A.REI.4.b

1

What are the solutions to the equation x^{2}-4x=-3?

\frac{4\pm \sqrt{16-4*0*-3}}{2*0}

\frac{4\pm \sqrt{16-4*1*-3}}{2*1}

\frac{4\pm \sqrt{16-4*1*3}}{2*1}

\frac{-4\pm \sqrt{16-4*1*3}}{2*1}

A.REI.4.a

A.REI.4.b

1

Which expression is equivalent to \sqrt{-23}?

-23i

23i

-i\sqrt{23}

i\sqrt{23}

A.REI.4.a

A.REI.4.b

1

This lesson is from Illustrative Mathematics. Algebra 2, Unit 3, Lesson 16. Internet. Available from https://curriculum.illustrativemathematics.org/HS/teachers/3/3/16/index.html ; accessed 27/July/2021.

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Illustrative Math - Algebra 2 - Unit 3 - Lesson 16

Illustrative Math - Algebra 2 - Unit 3 - Lesson 16

What number should be added to the expression x^{2}-15x to result in an expression equivalent to a perfect square?

What are the solutions to the equation x^{2}-4x=-3?

Which expression is equivalent to \sqrt{-23}?

What number should be added to the expression x^{2}-15x to result in an expression equivalent to a perfect square?

What are the solutions to the equation x^{2}-4x=-3?

Which expression is equivalent to \sqrt{-23}?