Instructional Video2:15
Curated Video

Subtracting Linear Expressions | HS.A-APR.1-1

9th - 12th
In this math video we will discover polynomial subtraction. We’ll subtract two polynomial expressions using the vertical stacking method — line up the like terms and subtract each set of like terms.
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You’ll watch the...
Instructional Video2:17
Curated Video

Rearrange a Formula | HS.A-CED.4

9th - 12th
In this quick math short, we start with the formula for the area of an isosceles right triangle and show how to rearrange it to solve for s, the side length. Then, we identify which of four answer choices gives an equivalent...