Question

50 - 6x 2 + 7 =5*6+21:7-12:4=5x(40-33) - 4+ 8 =​

Answer 1

Пошаговое объяснение:

50-6×2+7=45

5*6+21:7-12:4=30

5×(40-33)-4+8=39

Answer 2

Let's break down the given expression step by step:

1. Start with the first part: 50 - 6x^2 + 7 = 5 * 6 + 21

   Solve the equation on the left side first: 50 - 6x^2 + 7 = 57 - 6x^2

   Now, rewrite the equation: 57 - 6x^2 = 5 * 6 + 21

2. Calculate the right side of the equation: 5 * 6 = 30 21 = 21

   So, the equation becomes: 57 - 6x^2 = 30 + 21

3. Continue simplifying the equation: 57 - 6x^2 = 51

4. Move the constant to the other side of the equation by subtracting 51 from both sides: 57 - 51 - 6x^2 = 51 - 51

   This simplifies to: 6 - 6x^2 = 0

5. Divide both sides by -6 to isolate the variable (x): (6 - 6x^2) / -6 = 0 / -6

   Simplify: -1 + x^2 = 0

6. Add 1 to both sides of the equation to isolate x^2: -1 + x^2 + 1 = 0 + 1

   This simplifies to: x^2 = 1

7. Take the square root of both sides to solve for x: √(x^2) = √(1)

   x = ±1

So, the solution for the equation is x = 1 and x = -1. Now, let's move on to the second part of the expression:

8. 7 - 12 / 4 = 5 * (40 - 33) - 4 + 8

   First, calculate the division on the left side: 7 - 3 = 5 * (40 - 33) - 4 + 8

9. Calculate the expression inside the parentheses: 7 - 3 = 5 * 7 - 4 + 8

10. Continue simplifying: 4 = 35 - 4 + 8

11. Further simplify: 4 = 31 + 8

12. Finally: 4 = 39

So, the equation is not satisfied, which means there is no solution for the second part of the expression.

In summary:

• The solution for the first part is x = 1 and x = -1.
• The second part does not have a solution; it's not possible for 4 to equal 39.