I want apples instead of pears

I want apples instead of pears

wo xiangyao pingguo erbushi li

Two boxes of pears and two bags of milk

Two boxes of pear drink two bags of milk

I want an egg and a pear

An egg
an egg
A pear
a pear
I want an egg and a pear.
Peach = peach

In the figure below, the blank is a square. Can you use letters to indicate the area of the blank and the shadow

The letter means "what a" and "what". I'm working on this problem
It's done, AXA and bxa-a

Given that f (x) is a quadratic function, and f (0) = 0, f (x + 1) = f (x) + X + 1, find the expression of F (x)

F (x + 1) = f (x) + X + 1F (x) = f (x-1) + XF (x-1) = f (X-2) + x-1f (X-2) = f (x-3) + X-2. F (1) = f (0) + 1 add on the left side and add on the right side to get f (x + 1) = f (0) + {1 + 2 + 3 +. + X + (x + 1)} f (x + 1) = 0 + (x + 2) (x + 1) / 2. If x + 1 is regarded as a whole, then f (x) = x (x + 1) / 2 has personal opinion

If the square + X + k of 4x is a complete square, then K is ()

∵4x²+x+k
　　=(2x)²+x+k
　　=(2x+a)²
　　=4x²+4ax+a²
　∴4a=1
　　a=1/4
　∴k=a²
　　=(1/4)²
　　=1/16

(A2-B2) / (a-b) = (a3-b3) / (a-b) =? The results of (a4-b4) / (a-b) are calculated and verified by the above rules

(A2-B2) / (a-b) = (a + b) (a3-b3) / (a-b) = (A2 + AB + B2) (a4-b4) / (a-b) = (A3 + A2B + AB2 + B3) calculate the result of (a4-b4) / (a-b) and verify (a4-b4) / (a-b) = (A2 + B2) (A2-B2) / (a-b) = (A2 + B2) (a + b) = A3 + A2B + AB2

In △ ABC, a = 30 degrees, s △ ABC = 105, circumcircle radius r = 17, find the perimeter of △ ABC

Let a = BC, B = AC, C = ABS △ ABC = 1 / 2 * Sina * BC = 1051 / 2 * 1 / 2 * BC = 105bc = 420a = 2rsina = 2 * 17 * 1 / 2 = 17 by cosine theorem a & sup2; = B & sup2; + C & sup2; - 2cosa * bc17 & sup2; = B & sup2; + C & sup2; - 2 * √ 3 / 2 * 420B & sup2; + C & sup2; = 289 + 420 √ 3B & sup2; + 2BC + C & sup2

How much does 1 + 2 + 3 + + 4 add to 361
How much is 1 + 2 + 3 + 4 + 5 + added to 361

1+2+3+...+361=65341

There is a rectangular grassland, 40 meters long and 24 meters wide. If you draw its plan at the scale of 1:800, how long should you draw the length and width?
Help me get extra points

Length: 40 = 1:800 length = 40 / 800 = 0.05m = 5cm
Width: 24 = 1:800 width = 24 / 800 = 0.03m = 3cm
So the length is 5cm and the width is 3cm