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Q: Why does -1 squared equal -2?

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1 squared radical 40 is equal to 1 squared radical (4 x 10), and this become 2 squared radical 10. By adding 2 squared radical10 with 3 squared radical 10 we get 5 squared radical 10.

No because no 2 numbers can be squared to equal 4. 1 squared is 1 2 squared is 4 so the lowest answer is 5.

Sin squared is equal to 1 - cos squared.

1 squared plus 8 squared or 4 squared plus 7 squared

None of the graphs that I can see!

1^2 + 1^2 + 1^2 + 1^2 + 1^2 + 1^2 = 1 + 1 + 1 + 1 + 1 + 1 = 5

2 x cosine squared x -1 which also equals cos (2x)

(1 metre) squared = (1000 mm) squared = 1000000 mm squared.

sin2 x = (1/2)(1 - cos 2x) cos2 x = (1/2)(1 + cos 2x) Multiplying both you get (1/4) (1 - cos2 2x) Which is equal to (1/4) (1 - (1/2) (1 + cos 4x) = (1/8) (2 - 1 - cos 4x) = (1/8) (1 - cos 4x) Or If it is the trigonomic function, sin squared x and cosine squared x is equal to one

Cos^2 x = 1 - sin^2 x

9a squared = 81a^2

3 squared plus 2 squared is equal to 13.

4

9 plus 2 squared is equal to 13.

what is 10 squared DOES NOT equal what?

one squared equals one.

4. -2 squared means -2 times -2, so it's 4.

There is no such thing as 1 SQUARED by 5. It is actually 1 to the 5th power, which is 1.

Cube root is represented as to the power of 1/3.Squared is represented as to the power of 2.A cube root squared is therefore equal to the power of 2 x 1/3 = 2/3.

4

Neither, one liter is equal to 1 decimeter cubed.

Half a mile squared is 1/2 times 1/2. It equal 1/4 q. mile. Half a square mile is twice that amount.

No

4x4=16 or 2^4=16

8 squared x 2 is equal to 128.