calculate the difference of the square using the following formula a^2-b^2=(a+b) (a-b)
1)28^2-12^2
Compare 28^2 - 12^2 with a^2 - b^2. 28 = a, and 12 = b.
use those values in (a+b)(a-b) to find the difference of the two squares.
To calculate the difference of the squares using the given formula (a^2 - b^2 = (a + b)(a - b)), we can substitute the values into the formula:
1) a = 28, b = 12
a^2 - b^2 = (a + b)(a - b)
(28)^2 - (12)^2 = (28 + 12)(28 - 12)
784 - 144 = (40)(16)
640 = 640
Therefore, the difference of the squares, in this case, is 640.
To calculate the difference of squares using the given formula a^2 - b^2 = (a + b)(a - b), follow these steps:
1) Substitute the values of a and b into the formula.
a = 28
b = 12
So we have:
(28)^2 - (12)^2 = (28 + 12)(28 - 12)
2) Evaluate the square of each value inside the parentheses.
(28 + 12) = 40
(28 - 12) = 16
3) Calculate the product of the two values inside the parentheses.
40 * 16 = 640
Therefore, the difference of the squares (28^2 - 12^2) is equal to 640.