What’s on the Simplifying Radicals poster
The rule, 4 worked examples, and the mistake everyone makes.
- A radical simplifies when the number inside has a perfect square factor. Split it, ta…
- √(ab) = √a × √b
- √50 = 5√2
- √72 = 6√2
- √x⁶ = x³
- 3√2 + 5√2 = 8√2
- Common mistake: √(9 + 16) = 3 + 4 → √25 = 5
√2, √3 and √5 are irrational. Leaving them exact is more accurate than a rounded decimal.
Questions about the Simplifying Radicals poster
- What’s on the Simplifying Radicals poster?
- The rule, 4 worked examples, and the mistake everyone makes. A radical simplifies when the number inside has a perfect square factor. Split it, ta…; √(ab) = √a × √b; √50 = 5√2; √72 = 6√2; √x⁶ = x³; 3√2 + 5√2 = 8√2; Common mistake: √(9 + 16) = 3 + 4 → √25 = 5. √2, √3 and √5 are irrational. Leaving them exact is more accurate than a rounded decimal.
- Who is the Simplifying Radicals poster for?
- Simplifying Radicals is filed under 9th Grade (ages 14–15), so it matches what that year asks a child to remember. It is equally useful to an older student revisiting math, and to the parent or teacher answering the question at the kitchen table.
- When should you use the Simplifying Radicals poster?
- Find the largest perfect square factor. Using a smaller one just means doing it twice. A wall chart earns its place by being glanceable from where the work is happening, so Simplifying Radicals belongs on the wall where that math work actually happens, within glancing distance, rather than filed away.
- What other posters go with Simplifying Radicals?
- Absolute Value Equations, Arithmetic Sequences and Difference of Squares sit alongside Simplifying Radicals in the 9th Grade set. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Absolute Value EquationsArithmetic SequencesDifference of Squares
- Is the Simplifying Radicals poster free to download and print?
- Yes. Simplifying Radicals downloads as a free PDF with no account, no email and no watermark, like everything else in the 9th Grade set. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Simplifying Radicals poster print at?
- Simplifying Radicals is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Simplifying Radicals loses nothing.Printing guide
Related posters
Charts that sit alongside Simplifying Radicals on the same wall.
Browse every 9th Grade poster, or start from the full catalogue.