A junior 3 math problem is not very difficult, but I don t know

First square both sides, got.

3+10+2 root number 30 ? 6+7+2 root number 42 shift. 2 root number 30 ? 2 root number 42

Root number 30 ? Root number 42

Then square the two sides.

So the above ? Yes

So root number 3 + root number 10 root number 6 + root number 7

Root number 3 + root number 10) = 13 + 2 * root number 30, root number 6 + root number 7) square = 13 + 2 * root number 42, i.e. (root number 3 + root number 10) square (root number 6 + root number 7) square.

So root number 3 + root number 10 root number 6 + root number 7

Root number 3 + root number 10) square = 13 + 2 times root number 30

Root number 6 + root number 7) square = 13 + 2 times root number 42

So the root number 6 + the root number 7 is large.

Two squares. Gotta :

One is 13 + root number 30

The other one is 13+ root number 42

I don't need to tell you which one is bigger, right?

6+7 large.

You square both formulas.

After the two sides are squared, one side is (2 roots number 30) + 13, and the other side is (2 roots number 42) + 13, so the latter is larger.

When CGD rotates a certain angle counterclockwise around point C, MB=MD still exists

bmd=180°-2α

So when =60°, BMD is an equilateral triangle.

Because: the circumference of the diamond is 200cm

So: according to the diamond four sides are equal, the side length = 200 4 = 50 cm because: the diagonals of the diamond are bisected with each other so half of the diagonals are 30 cm because:

The diagonals are perpendicular to each other, dividing them into 4 right triangles, so: the length of the 2 sides of the right triangle is known, according to the Pythagorean theorem, 50 squares - 30 squares = 40 squares.

So: 40*2=80cm

A: The length of the other diagonal is 80cm

2.The area is equal to half of the diagonal product, 60*80 2=2400cm2

2. The absolute value of (x-1) plus the square of (y+2) + (z-3) is equal to 0, so x-1=0, y+2=0, z-3=0

x=1 y=-2 z=3

So (x+1)(y-2)(z+3)=(1+1)(-2-2)(3+3)=-48

Hello, because the analysis process is more troublesome, and there are some mathematical symbols in it, I can't type out the web page that directly gives you the answer to this question Your question is the second question here, if you have any doubts, please follow up Thank you! Hope to adopt

Icy and intense.