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Anonymous
x2 - 42x + 441 = (x - 21)2
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3 x 3 x 7 x 7 = 441
441 = 3 x 3 x 7 x 7
63 x 7 = 441
32 x 72 = 441
you have to make it into a one variable equation 21 * 21 = 7 * 7 * X 441 = 49 * X 441/49 = X 9 = X
147x3 = 441 x3 = 441/147 x3 = 3 x = 31/3 x ≈ 1.4
To find the highest common factor of 441 and 378, we first need to factorize both numbers. The factors of 441 are 3 x 3 x 7 x 7, and the factors of 378 are 2 x 3 x 3 x 3 x 7. The common factors between the two numbers are 3 x 3 x 7, which equals 63. Therefore, the highest common factor of 441 and 378 is 63.
The 9 factors of 441 are 1, 3, 7, 9, 21, 49, 63, 147, and 441. It is a square number (21 x 21), so it has an odd number of factors.The factor pairs of 441 are 1 x 441, 3 x 147, 7 x 63, 9 x 49, and 21 x 21.
1, 3, 7, 9, 21, 49, 63, 147, 441 3 and 7 are prime.
The prime factorization of 441 is 3 x 3 x 7 x 7
The prime factors of 441 are: 3, 7