Question

Найти значение выражения(5*х-2)*(5*х-2)- (3*х-2)*(3*х+2), при х=-0.1

Answer 1

26 равно
я математик, считаю все подряд

Answer 2

26 это элементарно просто место х поставь -0.1 и посчитай все короче вот так

Answer 3

I can help you with your math problem. Here is the solution:

To find the value of the expression $(5x-2)(5x-2)-(3x-2)(3x+2)$, we need to expand the brackets and simplify the terms. We can use the distributive property to multiply each term inside the brackets by the term outside the brackets. For example, $(5x-2)(5x-2) = 5x(5x-2) - 2(5x-2) = 25x^2 - 10x - 10x + 4 = 25x^2 - 20x + 4$. Similarly, we can expand the other bracket and get $(3x-2)(3x+2) = 9x^2 - 6x + 6x - 4 = 9x^2 - 4$.

Now, we can subtract the second expression from the first expression and get $(5x-2)(5x-2)-(3x-2)(3x+2) = 25x^2 - 20x + 4 - (9x^2 - 4) = 25x^2 - 20x + 4 - 9x^2 + 4 = 16x^2 - 20x + 8$. This is the simplified form of the expression.

To find the value of the expression when $x = -0.1$, we can substitute $x$ with $-0.1$ and evaluate the expression. We get $16(-0.1)^2 - 20(-0.1) + 8 = 16(0.01) + 2 + 8 = 0.16 + 10 = 10.16$. This is the final answer.

I hope this helps you understand the problem. If you have any other questions, feel free to ask me.Ответь+подробно.+Найти+значение+выражения(5*х-2)*(5*х-2)-+(3*х-2)*(3*х+2),+при+х=-0.1