Question

X=4,y=-6 знайти: 7,8x+3,4y2

Answer 1

Ответ:

(7,8×4)+3,4×(-6)×2=-9,6

Answer 2

To find the value of the expression 7.8x + 3.4y^2, we can substitute the given values of x and y into the equation.

Given: x = 4 y = -6

Substituting the values: 7.8x + 3.4y^2 = 7.8(4) + 3.4(-6)^2

First, let's simplify the expression (-6)^2: (-6)^2 = 36

Now, substituting the values: 7.8(4) + 3.4(36) = 31.2 + 122.4 = 153.6

Therefore, the value of the expression 7.8x + 3.4y^2, when x = 4 and y = -6, is 153.6.