Question

Знайдіть значення виразу √2a-b,якщо a=7, b=-2

Answer 1

$\sqrt{2a-b}= \sqrt{14+2}=\pm4$

Answer 2

To find the value of the expression √(2a - b) with a = 7 and b = -2, follow these steps:

Step 1: Substitute the values of a and b into the expression. √(2 * 7 - (-2))

Step 2: Perform the arithmetic operations inside the square root. √(14 + 2)

Step 3: Simplify the expression inside the square root. √16

Step 4: Calculate the square root of 16. √16 = 4

So, the value of the expression √(2a - b) with a = 7 and b = -2 is 4.