Question

10:2 пожалуйста срочно надо

Answer 1

5

т.к. по таблице умножения будет 2×5=10

Answer 2

Mathematical Equation Solution

The given equation is: sqrt(10-y) + sqrt(y) = 4

To solve for y, we can follow these steps:

1. Start by squaring both sides of the equation to eliminate the square roots. 2. Simplify the equation and solve for y.

Squaring both sides of the equation gives us:

(sqrt(10-y) + sqrt(y))^2 = 4^2

Expanding the left-hand side of the equation:

(10-y) + 2*sqrt((10-y)*y) + y = 16

Rearranging the terms:

2*sqrt((10-y)*y) = 6

Squaring both sides again:

(2*sqrt((10-y)*y))^2 = 6^2

Simplifying:

4*(10-y)*y = 36

Expanding and rearranging:

40y - 4y^2 = 36

Rearranging and simplifying:

4y^2 - 40y + 36 = 0

Using the quadratic formula to solve for y:

y = (-b ± sqrt(b^2 - 4ac)) / (2a)

Where a = 4, b = -40, and c = 36.

Plugging in the values:

y = (-(-40) ± sqrt((-40)^2 - 4*4*36)) / (2*4)

Solving for y gives us two possible solutions:

y1 = 9 and y2 = 1

Final Solutions

So, the solutions for y are y = 9 and y = 1.

Substituting these values back into the original equation gives us the corresponding x values:

For y = 9, x = 1 For y = 1, x = 9