Question

Simplify these expressions and find their values, if x = 3, a = – 1, b = – 2. 3x – 5a – x2 + 9b

Answer 1

Answer:

its (-13)

Step-by-step explanation:

i asked my teacher

Answer 2

Given,

• $3x-5a-x^2 +9b$ is given.
• x = 3
• a = -1
• b = -2

To find,

• We have to simplify the expression.

To find,

We can simplify the given expression by using the given conditions by substituting the given values in the expression.

   x = 3,  a = -1, and b = -2

     $3x-5a-x^2 +9b$

      3(3) -5(-1) -(3)² + 9(-2)

       9 +5 -9 -18

            5 -18

             -13

Hence, if x = 3, a = – 1, b = – 2, then the expression 3x – 5a – x² + 9b can be simplified as -13.