x+y=245 x=0-245 y=0-245
245 = 5 x 7 x 7
1,225
As a product of its prime factors: 5*7*7 = 245
3 x 3 x 3 x 3 = 81
81 x 24 = 1944
x: x2 - 81 = 0
81 = 3 x 3 x 3 x 3 or 34
0
The product is 729
7 x (81 ÷ 9) = 7 x 9 = 63
Turn it around for my convenience. 81X^2 - 25 = 0 add 25 to each side 81X^2 = 25 divide both sides by 81 X^2 = 25/81 take square root both sides X = sqrt(25/81 express as X = sqrt(25)/sqrt(81) do it X = 5/9 ----------------check in original equation 81(5/9)^2 - 25 = 0 81(25/81) - 25 = 0 25 - 25 = 0 0 = 0 checks