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Earn +20 ptsQ: Is -20 to the second power equal to -400?
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What does 40 to the second power equal?
20
What is 20 to the 2nd power?
20 to the second power is more commonly known as 202 or 20 squared. Squaring is calculated by taking two of the number and multiplying them together. In this case, 20x20=400 and so 20 to the 2nd power is 400.
What multiplication facts equal 400?
It is a square number because 20 times 20 = 400
What two numbers multiply to equal 400 and add two equal -40?
360
How do you write 20 squared?
To write powers of a number you write the number, followed by the number of the power in superscript. For example, a number to the second power is x2, a number to the third power is x3 and so on. Squaring is taking a number to the second power. Thus 20 squared is 202, which equals 400.
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