U6L5 Squares and Circles

Suppose we square several (a)   , or expressions that contain 2 terms. We get (b)   , or expressions that contain 3 terms. Does any (c)   emerge in the results?

• binomials
• trinomials
• pattern

Each of the expressions on the right are called perfect square trinomials because they are the result of multiplying an expression by itself.

• True
• False

• 1
• square of half the coefficient of x
• perfect square

• rearrange them
• find
• the circle

• the equation of a circle
• identify the center and radius of
• rewrite
• squared binomials
• easier to recognize

• 3 terms

• center of the circle
• the circle’s radius

Which one is an example of a perfect square trinomial?

• x² + 5x + 6
• x² - 4x + 4
• x² + 2x + 1
• x² + 6x + 9

Mathematical Equivalence

ON

• +8
• -8
• -4
• +4
• +16
• -16