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Earn +20 ptsQ: How do you factor the expression 81 minus M square?
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What algebraic expression shows the square of the distance from point A to point B minus 81?
(B - A)2 - 81 or (B - A + 9)(B - A - 9) If the starting point, A, is taken as zero the the expression simplifies to (B + 9)(B - 9)
What is the square root of 81?
The square root of 81 is: ±9 (9 or -9)A square root is a number which, when multiplied by itself, equals the original number. As 9 x 9 = 81 and -9 x -9 = 81, the answer is plus or minus nine.
What is the largest perfect square factor of 405?
81 is the only one.
The polynomial expression 4x2 - 81?
4x2-81
What is 81 a perfect square by what number?
81 is a perfect square because 81 = 9 x 9
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