Formula is a general rule followed by variables to make a statement true. There are many formulas in Math like the Binomial formula, Quadratic formula, Geometry formulas etc. Formula calculator is the online tool which can give answer to a question by applying the correct formula from its appropriate topic.
Example 1: Expand the given algebraic expression using the appropriate formula, (x + 4)2
Given algebraic expression: (x + 4)2
The appropriate formula for the above expression is > (a + b)2 = a2 + 2ab + b2
From the given expression, we can say that > a = x and b = 4
So applying the given formula we get.
(x + 4)2 = x2 + (2 * x * 4) + 42
(x + 4)2 = x2 + 8x + 16
Example 2: Find the area of the rectangle given the length is 3m and width is 5m.
Given information: length, l = 3m and width, w = 5m
In order to find the area of the rectangle we can use its Area formula.
Area of a rectangle, A = length * width
So using the above formula, we plug in the given numbers in the place of length and width.
Area, A = 3m * 5m
Area of a rectangle, A = 15m2