Question

Write a Java expression for the following: √b^2-4ac​

Answer 1

Write a Java expression for the following: √b^2-4ac​

Answer: Math.sqrt((Math.pow(b,2))-(4*a*c))

Answer 2

Answer:

Java expression for √(b² - 4ac) is -

• Math.sqrt(b*b - 4*a*c) or,
• Math.sqrt(Math.pow(b,2) - 4*a*c)

Explanation:

• To calculate square root of positive number, the Math.sqrt() function is used. Here, sqrt() function is used to find the square root of b² - 4ac.
• Math.pow(x, y) returns x raised to the power y. To calculate b², we wrote Math.pow(b, 2). We can also write b*b there but for larger values like b^20, b^30, it is time consuming to multiply b 30 times. So, for that case, Math.pow() function is used.