0,3⋅68x−0,1(3,4p−1,2x)+3=Упрощаем произведения:20,4x−0,1(3,4p−1,2x)+3=Раскрытие скобок:20,4x−1750p+325x+3=201325x−1750p+3Ответ: 201325x−1750p+3
√(x-2) + √(x +6) = 4 |²
x -2 + 2√<span>(x-2) (x +6) + x +6 = 16
2</span>√<span>(x-2) (x +6) = 16 -x +2 -x -6
2</span>√<span>(x-2) (x +6) = 12 -2x
</span>√(x-2) (x +6) = 6 -x |²
<span>(x-2) (x +6) = 36 - 12x +x</span>²
x² +4x -12 = 36 - 12x +x²
16x = 48
x = 3
Обязательно нужна проверка:
√(3-2) +√ (3 +6) = 4 (истинное равенство)
Ответ: 3
(a^2+4ab+4b^2)-9=(a+2b)^2-9=(a+2b-3)(a+2b+3)
<span>х = 0,(87) <=> 100х = 87,(87) <=> 100х - 87 = 0,(87) <=> 100х - 87 = х <=> 99х = 87 <=> х = 87/99 = 29/33</span>
1) x1=-2 x2=4
y1=-4 y2=8
2)y=0 x=8