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Q: What two product 81 have sum of 30?

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3 and 27.

-9 and -9 multiply to get 81. ■

81 does not have two factors like that. -81 has 27 and -3.

24 two digit number, which sum is greter than their product. Which are following: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 30, 31, 40, 41, 50, 51, 60, 61, 70, 71, 80, 81, 90, 91

As a product of its prime factors: 3*3*3*3 = 81 and 4*3 = 12

If it was a square, the answer would be 81 square cm. The area will be the product of two numbers whose sum is half the perimeter.

81

The only pair of positive single-digit numbers which give a product of 81 are 9 and 9.

36 and 45 = 81.

The number is 81.

They are -41 and -40.

81 + 83 = 164

9 (81 + 64 = 145)

To factor this, find two numbers whose product is 81 and sum 18. These two numbers are therefore 9 and 9. So we can rewrite the polynomial in its factored form as follows: (k+9)(k+9), or "k plus 9 squared"

(4 x 9) + (5 x 9) = (9 x 9)c= 81

18 and 81

-79 and -81.

The sum is 121.

81

81 = 92 = (8 + 1)2

3³ + 9² = 9 + 81 = 90.

the numbers are 1296 and 81

81 -- 8+1 = 9 -- square root of 81 = 9

27 and 81; 27 + 81 = 108, and 3 x 27 = 81

81