√(x+4)=√(2x-1) , x+4≥0 ∧ 2x-1≥0, x≥-4 ∧ x≥0,5, x∈(0,5, ∞)
x+4=2x-1, x=5 ,
√(5+4)=√9=3, √(2.5-1)=√(10-1)=√9=3
Otvet: x=5
Держи ! -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
- 8a - 2ax -x² <span> - (-4</span>a²<span> - 2ах - x</span>²<span> ) при а = </span><span> , х= -2</span>
- 8a - 2ax -x² - (-4a² - 2ах - x² ) = 4а² - 8а
<span>4*(-3/4)</span>²<span> – 8*(-3/4) = 9/4 + 24/4 = (9 + 24)4 = </span>33/4 = 8, 25