Question

−1,76x+93xy2+21xy2 если x=5 и y=0,2 .

Answer 1

-1,76*5+93*5*0,2*2+21*5*0,2*2=-88+186+42=140

НО это не точно,сверься  с ответами в конце учебника

Answer 2

To evaluate the expression −1.76x + 93xy^2 + 21xy^2 when x = 5 and y = 0.2, we substitute the given values into the expression and perform the calculations.

Substituting x = 5 and y = 0.2 into the expression: −1.76(5) + 93(5)(0.2)^2 + 21(5)(0.2)^2

Calculating the terms: −1.76(5) = -8.8 93(5)(0.2)^2 = 93(5)(0.04) = 9.3 21(5)(0.2)^2 = 21(5)(0.04) = 4.2

Adding all the terms: -8.8 + 9.3 + 4.2 = 4.7

Therefore, when x = 5 and y = 0.2, the value of the expression −1.76x + 93xy^2 + 21xy^2 is 4.7.