In the overall, what are the first 20 perfect squares?
Anywho, how do you figure out a number squared? Multiply the single digit number by itself. Write down the number you want to square. Remember that when you're squaring a number, you multiply it by the same number, not 2. is not 5 x 2 = 10. Instead, it's 5 x 5 = 25.
When an expression has the general form a²+2ab+b², then we can factor it as (a+b)². For example, x²+10x+25 can be factored as (x+5)². This method is based on the pattern (a+b)²=a²+2ab+b², which can be verified by expanding the parentheses in (a+b)(a+b).