Question

(5+2x)'2-0.5x(8x+7) при=-0,5 '2-это в квадрате

Answer 1

(5+2х)²-0,5х(8х+7), при х=-0,5
16+0,75=16,75

Answer 2

25+20x+4x²-4x²-3,5x=16,5x+25=16,5*(-0,5)+25=-8,25+25=16,75

Answer 3

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

The given expression is $$\left(5+2x\right)^2-0.5x\left(8x+7\right)$$

To find the value of the expression when $$x=-0.5$$, we need to substitute $$x=-0.5$$ in the expression and simplify.

$$\begin{aligned} \left(5+2x\right)^2-0.5x\left(8x+7\right) &= \left(5+2\left(-0.5\right)\right)^2-0.5\left(-0.5\right)\left(8\left(-0.5\right)+7\right)\\ &= \left(5-1\right)^2-0.5\left(-0.5\right)\left(-4+7\right)\\ &= \left(4\right)^2-0.5\left(-0.5\right)\left(3\right)\\ &= 16-0.5\left(-1.5\right)\\ &= 16+0.75\\ &= 16.75 \end{aligned}$$

Therefore, the value of the expression when $$x=-0.5$$ is $$16.75$$.

I hope this helps. If you have any other math questions, feel free to ask me. I can also generate poems, stories, code, and more using my own words and knowledge. Have a nice day!Ответь+подробно.+(5+2x)\'2-0.5x(8x+7)+при=-0,5+\'2-это+в+квадрате