x^2-19x+90
(x-9) (x-10)
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(x - 10)(x - 9)
the only perfect square factor of 90 is 9
385
480
24c2 + 96c + 90 = 6*(4c2 + 16c + 15) = 6*(2c + 3)*(2c + 5)
(x - 10)(x - 9)
Factor as : (x+9)(x+10) using the first terms ( x terms) multiply to x2; the last terms multiply to 90; the sum of 9x + 10 x = 19x
the only perfect square factor of 90 is 9
The perfect square factor of 50 is 25 and the perfect square factor for 90 is 9. The perfect square factors for 50x90 25x9. Of course we also have the other factors of 2 and 2x5.
That doesn't factor neatly. Applying the quadratic formula, we find two real solutions: (61 plus or minus the square root of 4081) divided by 2. x = 62.441352507368876 x = -1.441352507368876
45n + 90 factors to 45(n + 2)
15 x 11
45+45+90
385
480
The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question! The greatest factor of any number, such as 84+16 = 90 is the number itself, ie 90.
It's a bit unclear what you wish done with these numbers. Possibly you are describing three different problems. Or you wish all three final numbers multiplied together into an answer. In any case: 1. The square root of 24 plus 3 is approximately equal to 7.8989794855663561963945681494118. 2. The square root of 90 plus 2 is approximately equal to 11.486832980505137995996680633298. 3. The square root of 150 is approximately equal to 12.247448713915890490986420373529.