Question

(x-3)(x+4)-(x+6)(x-5) x=5 11/29 3*(a-2b)-4ab-(2a-b) a=2 b=1

Answer 1

Ответ:

Пошаговое объяснение:

Answer 2

Let's first evaluate the expressions for the given values of x, a, and b:

1. For the expression (x-3)(x+4)-(x+6)(x-5) with x = 5 11/29:

   First, calculate the value of x - 3 and x + 4:

   x - 3 = 5 11/29 - 3 = 2 11/29

   x + 4 = 5 11/29 + 4 = 9 11/29

   Now, calculate (x - 3)(x + 4):

   (2 11/29)(9 11/29) = 20 62/841

   Next, calculate x + 6 and x - 5:

   x + 6 = 5 11/29 + 6 = 11 11/29

   x - 5 = 5 11/29 - 5 = 11/29

   Now, calculate (x + 6)(x - 5):

   (11 11/29)(11/29) = 11 22/841

   Finally, subtract the second result from the first:

   (20 62/841) - (11 22/841) = 9 40/841

2. For the expression 3*(a-2b)-4ab-(2a-b) with a = 2 and b = 1:

   First, calculate 3*(a-2b):

   3*(2 - 21) = 3(2 - 2) = 3*0 = 0

   Next, calculate -4ab:

   -421 = -8

   Now, calculate 2a - b:

   2*2 - 1 = 4 - 1 = 3

   Finally, subtract the second result from the sum of the first two:

   0 - 8 - 3 = -11

So, the value of the first expression when x = 5 11/29 is 9 40/841, and the value of the second expression when a = 2 and b = 1 is -11.