Question

1)8- x³, при x=2 2)1-5², x=7 3)16-5x⁴,x=30 4)8,5•(2x+10)=0 5)16-x+2=3x+10

Answer 1

=———-———-= С Н И З У =-———-———=

Answer 2

Ответ:

1)8-2^3=0

5)16-х+2=3х+10

16-+2-10=3×+х

8=4х

х=2

Answer 3

1) To find the value of 8 - x³ when x = 2, we substitute x = 2 into the expression and simplify:

8 - x³ = 8 - (2)³ = 8 - 8 = 0

Therefore, when x = 2, the value of 8 - x³ is 0.

2) To find the value of 1 - 5² when x = 7, we substitute x = 7 into the expression and simplify:

1 - 5² = 1 - (7)² = 1 - 49 = -48

Therefore, when x = 7, the value of 1 - 5² is -48.

3) To find the value of 16 - 5x⁴ when x = 30, we substitute x = 30 into the expression and simplify:

16 - 5x⁴ = 16 - 5(30)⁴ = 16 - 5(90000) = 16 - 450000 = -449984

Therefore, when x = 30, the value of 16 - 5x⁴ is -449984.

4) To solve the equation 8.5 • (2x + 10) = 0, we need to isolate x. Let's solve it step by step:

8.5 • (2x + 10) = 0

First, divide both sides of the equation by 8.5:

2x + 10 = 0

Next, subtract 10 from both sides:

2x = -10

Finally, divide both sides by 2:

x = -10/2 x = -5

Therefore, the solution to the equation 8.5 • (2x + 10) = 0 is x = -5.

5) To solve the equation 16 - x + 2 = 3x + 10, we need to isolate x. Let's solve it step by step:

16 - x + 2 = 3x + 10

First, combine like terms on both sides of the equation:

18 - x = 3x + 10

Next, add x to both sides:

18 = 4x + 10

Then, subtract 10 from both sides:

8 = 4x

Finally, divide both sides by 4:

x = 8/4 x = 2

Therefore, the solution to the equation 16 - x + 2 = 3x + 10 is x = 2.

I hope this helps! Let me know if you have any further questions.