Algebra · Classes 7, 8, 9
Square of a Difference
Expand the square of a difference.
FORMULA
\((a-b)^2=a^2-2ab+b^2\)
Worked example
(5−2)² = 25−20+4 = 9
Understand this formula
Expand the square of a difference.
Check measurement units, mathematical domains and rounding before applying any result in an examination.