Question

9a+5a-9b²/b при a=9;b=-36​

Answer 1

81+45-11 664/-36=-11 538/-36=320,5

Answer 2

To evaluate the expression, substitute the values of a and b into the given expression:

a = 9 b = -36

9a + 5a - 9b²/b

Replacing a with 9 and b with -36:

9(9) + 5(9) - 9(-36)²/(-36)

81 + 45 - 9(1296)/(-36)

81 + 45 + 11664/36

126 + 324

450

Therefore, when a = 9 and b = -36, the value of the expression 9a + 5a - 9b²/b is 450.

Answer 3

To evaluate the expression 9a + 5a - (9b²/b) when a = 9 and b = -36, we can substitute the given values into the expression and simplify.

Let's start with the substitution:

9a + 5a - (9b²/b) = 9(9) + 5(9) - (9(-36)²/(-36))

Now, let's simplify each term step by step:

9(9) = 81 5(9) = 45

For the third term, we have:

9(-36)²/(-36)

(-36)² = 1296 (squaring a negative number gives a positive result) So, we have:

9(1296)/(-36)

Now, let's simplify further:

9(1296) = 11664 (-36) cancels out in the numerator and denominator, resulting in:

11664/1

Therefore, the final expression is:

81 + 45 - 11664/1

To combine the terms and perform the division, we can find a common denominator:

81 + 45 - 11664/1 = (81 + 45) - 11664/1

Adding the numerators:

81 + 45 = 126

Now, we have:

126 - 11664/1

To subtract the fractions, we need a common denominator:

126 - 11664/1 = (126 * 1 - 11664) / 1

Calculating the numerator:

126 * 1 - 11664 = -11538

Therefore, the final result is:

-11538/1

Simplified, the expression 9a + 5a - (9b²/b) when a = 9 and b = -36 is -11538.