What is 14 squared minus 13 squared?
What is 14 squared minus 13 squared?
Approach: Use a^2 - b^2 = (a+b)(a-b).
27. (14+13)(14-13) = 27 * 1 = 27.
Follow-up: What is 25 squared minus 24 squared?
Key concepts: difference of squares.
What is 14 squared minus 13 squared?
Approach: Use a^2 - b^2 = (a+b)(a-b).
27. (14+13)(14-13) = 27 * 1 = 27.
Follow-up: What is 25 squared minus 24 squared?
Key concepts: difference of squares.