The cube of X + 125 = 0; the cube of question 3 (X-5) = negative 375 The cube of X + 125 = 0; the cube of question 3 (X-5) = negative 375

The cube of X + 125 = 0; the cube of question 3 (X-5) = negative 375 The cube of X + 125 = 0; the cube of question 3 (X-5) = negative 375

x³=-125=(-5)³
x=-5
(x-5)³=-125=(-5)³
x-5=-5
x=0

The cube of (x-1) - 0.125 = 0

The cube of (x-1) - 0.125 = 0
Cube of (x-1) = 0.125
x-1 = 0.5
x=1+0.5=1.5

Finding a for a ^ 3-2a ^ 2-4a + 5 = 0

a^3-2a^2-4a+5=a(a^2-2a-4)+5=a(a^2-2a+1)-5a+5
=a(a-1)^2-5(a-1)=(a-1)( a(a-1) -5)
=(a-1)(a^2-a-5)=0

The Geometer's Sketchpad makes one line segment change with the length of another
For example, if the moving point P starts from point B and moves along BA at a speed of 1cm per second, then point e moves along the line segment CD, and PC = PE. If point P starts from point B and t (s), the area of quad Pade is Y1, find the functional relation of Y1 with respect to t (s), and write the value range of independent variable t
This is an example. Just tell me how to draw

In the Geometer's Sketchpad, draw a circle with P as the center and the length of PC as the radius, and the intersection point with the line segment CD is e. you try to make a new line segment equal to twice the length of PC, draw a circle with the length of the new line segment as the radius, or calculate the length of PC, double it and make a circle with it as the radius,

To solve one dimensional linear inequality: 1.1 + 3 x > 5-2 X-2 2.5 x > = 3 + 2 X-2 3.2 (x + 1) + 3 X-2

1.6+2x>30-3(x-2) 5x>30 x>6
2.2x>30+5(x-2) 3x

Let x, x + 1, x + 2 be the lengths of the three sides of an obtuse triangle, and find the value range of the real number X

Because triangles are obtuse angle triangles, so x & # 178; + (x + 1) &# 178; < (x + 2) &# 178;
X²+X²+2X+1＜X²+4X+4
X²-2X-3＜0
（X+1）（X-3）＜0
-1＜X＜3
And X + X + 1 ＞ x + 2 (the sum of two sides should be greater than the third side)
X＞1
Therefore, 1 < x < 3

For a quadratic function, when the independent variable x = 0, the function value y = - 1; when x is - 2 and 12, the function value y = 0, find the analytic expression of the quadratic function

According to the meaning of the question, let the analytic formula of quadratic function be y = a (x + 2) (X-12), and substitute (0, - 1) into: - a = - 1, that is, a = 1, then the analytic formula of quadratic function is y = (x + 2) (X-12) = x2 + 32x-1

The fourth power of X + the fourth power of Y + the fourth power of z-2x the second power of y-2x the second power of z-2y the second power of Z

x^4＋y^4＋z^4－2x^2y^2－2x^2z^2－2y^2z^2 ＝(x^4＋y^4－2x^2y^2)＋z^4－2x^2z^2－2y^2z^2 ＝(x^2－y^2)^2－2(x^2－y^2)z^2 ＋(z^2)^2－4y^2z^2＝(x^2－y^2－z^2)^2－(2yz)^2＝(x^2－y^2－z^2＋2yz)(x^2－y^2－z^2...

There are 50 pieces. Meiyangyang and Xiyangyang take turns to take five pieces at most and at least one piece at a time. If meiyangyang takes the last piece first, how many pieces should it take first? How to win in the future?

50 (1 + 5), = 50 (6), = 8 (Times) 2 (pieces); as long as the United States sheep first take 2, and then see how many pieces pleasant goat takes each time, as long as the number of pieces and satisfaction with pleasant goat is 6 each time, the United States sheep will win. Answer: we should choose 2, and then see how many pieces pleasant goat takes each time, as long as the number of pieces and satisfaction with pleasant goat is 6 each time, the United States sheep will win

If the vertex of quadratic function y = x & # 178; - 2x + C is on y = - 2x + 1, find C

Vertex coordinates (1, C-1)
c-1=-2*1+1
c=0