Back to Prove and use polynomial identities — Problem 1 · Task Set 15

HSA.APR.C.4 Tutor Intake — Polynomial Identities

This short check helps your tutor understand where to start with polynomial identities. Answer each question on your own without help. If you are unsure, give your best try.

Grade 9·5 problems·~10 min·Common Core Math - HS Algebra·standard·hsa-apr-c-4

Work through problems with immediate feedback

Concepts

Which of the following is a polynomial identity (true for all values
of $x$ and $y$ )?

$x^2 - 4 = 0$

$(x + y)^2 = x^2 + y^2$

$(x + y)(x - y) = x^2 - y^2$

$x^2 + y^2 = 0$