Question

8x(36+x)=1288 x+x+86=178 5a+a3a при a=108 2x+x при x=25

Answer 1

2) х+х+86=178
2х-92=0
2х=92 |÷2
х=46

Answer 2

Let's solve each expression step by step:

1. 8x(36+x)=1288 Expanding the left-hand side of the equation using the distributive property, we get: 8x36 + 8xx = 1288 Simplifying the equation, we get: 288x + 8x^2 = 1288 Rearranging the terms, we get a quadratic equation: 8x^2 + 288x - 1288 = 0 Dividing both sides by 8, we get: x^2 + 36x - 161 = 0 Solving this quadratic equation using the quadratic formula, we get: x = (-36 ± √(36^2 - 4*(-161)))/2 x = (-36 ± √722)/2 x ≈ -38.07 or x ≈ 2.07 Therefore, the solutions to the equation are x ≈ -38.07 or x ≈ 2.07.

2. x+x+86=178 Combining like terms, we get: 2x + 86 = 178 Subtracting 86 from both sides, we get: 2x = 92 Dividing both sides by 2, we get: x = 46 Therefore, the solution to the equation is x = 46.

3. 5a+a3a, when a=108 Substituting a=108, we get: 5(108) + a(3)(108) Simplifying the expression, we get: 540 + 324a Therefore, the value of the expression when a=108 is 540 + 324(108) = 35232.

4. 2x+x, when x=25 Substituting x=25, we get: 2(25) + 25 Simplifying the expression, we get: 50 + 25 Therefore, the value of the expression when x=25 is 75.