Triangle + square = 92 square + circle = 140 triangle + circle = 76

Triangle + square = 92 square + circle = 140 triangle + circle = 76

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Add the three equations and you get
2 (triangle + square + circle) = 92 + 140 + 76 = 308
So triangle + square + circle = 154,
Three formulas are subtracted from each other
Circle = 62, triangle = 14, square = 78
Round 62
Triangle 14
Block 78
Block 78
Triangle 14
Round 62
Triangle + square = 92... 1
Square + circle = 140..... 2
Triangle + circle = 76......... 3
Formula 1-2
Triangle circle = - 48......... 4
3 + 4
2 * triangle = 28
Triangle = 14... 5
Substituting formula 5 into formula 4 leads to
14-circle = - 48
Circle = 62
Substitute formula 5 into Formula 1
14 + blocks = 92
Block = 78
Given the function f (x) = 2Sin (x-wu / 6) cosx + 2cos ^ 2x. Find the monotone increasing interval of (1) f (x) (2) let / 4
（1）f（x）=2sin（x-π/6）cosx+2cos^2x=（√3sinx-cosx）cosx+2cosxcosx
=（√3sinx+cosx）cosx=√3/2sin2x+1/2cos2x+1/2
=sin（2x+π/6）+1/2
Let 2K π - π / 2
Square plus triangle equals 320, square equals triangle plus triangle plus triangle, how many squares and triangles are there
Block = 240
Triangle = 80
Let X be the value of the square and y be the value of the triangle
x+y=320，x=3x
By solving the above equations, we can get
x=240，y=80
Square + triangle = 320
Square = 3 triangles
So: 4 triangle = 320
Triangle = 80
Block = 240
(- 25X third power + 15x second power - 20x) / (- 5x) calculation
(-25x^3+15x^2-20x)÷(-5x)
=5x^2-3x+4
Triangle plus triangle plus square is equal to 24, square plus triangle plus square is equal to 36, how much is triangle and square
Triangle plus triangle plus square is 24
The result is: Triangle = 24 △ 2 = 12
Square plus triangle plus square is 36,
The result is: 2 squares = 36-6 = 30
Square = 30 △ 2 = 15
Calculate √ 25X quartic power y = ();
5x & # 178; √ Y & # 178; 5x √ X & # 178; y X & # 178; √ 25y 5x & # 178; y choose one OK!
Choose D
√(25x^4) y
=√[5²(x²)²] y
=5x²y
What's under the root? Is x under the root? Question: the fourth power of 25X under the root sign Y = ()
Triangle / square equals circle, triangle plus square * circle equals 250, what is triangle equal to
Let triangle = a, square = B, circle = C
a/b=c,a+c*b=250
Substitute the first formula for the second
a+(a/b)*b=a+a=250
So a = 125
One hundred and twenty-five
Given: x square + 3x + 1 = 0, find the value of: x square + 1 / 2 of X
I'll give you a gift today
From x ^ 2 + 3x + 1 = 0,
x+3+1/x=0,
x+1/x=-3,
Square, get
（x+1/x）^2=9,
x^2+2+1/x^2=9,
x^2+1/x^2=7
The square of X + 3x + 1 = 0
Divide each side by X
X+3+1/X=0
X+1/X=-3
Triangle plus square is equal to circle, square plus circle is equal to triangle, triangle plus circle is equal to square?
It's all 0
because
Triangle + square = circle (1)
Square + circle = triangle (2)
Triangle + circle = square (3)
Add the above three formulas to get
2 (triangle + square + circle) = triangle + square + circle
So triangle + square + circle = 0 (4)
Then (4) is combined with (1), (2), (3) respectively to get that triangle, square and circle are all 0
It's two dollars
Given the square of x-3x-1 = 0, find the value of (1) x + 1 / X
X & sup2; - 3x-1 = 0 (obviously x ≠ 0)
Divide both sides by X
x-3-1/x=0
So X-1 / x = 3
The square of both sides gives X & sup2; - 2 + 1 / X & sup2; = 9
x²+1/x²=11
x²+2+1/x²=(x+1/x)²=13
So x + 1 / x = ± √ 13
Solve x directly and bring it in.