67
42 + 21 x 2 = 84
(x + 3)(7x^2 + 1)
40-42+5 -2+5 3 3 is the answer
Interesting and very difficult to put into x amount of letters.
7x6 21x2 14x3 10.5x4 8.4x5
21x2 - 31x + 8 = (3x - 8)(7x - 1)
y = 3x + 21x2 = 3x(1 + 7x)
105x3
21x2 + 27x - 30 = 3*(7x2 + 9x - 10) = 3*(7x2 - 5x + 14x - 10) =3*[x*(7x - 5) + 2*(7x - 5)] = 3*(7x - 5)*(x + 2)
No, 21 is not prime.
If you mean: 21x2-59x+8 then it is (3x-8)(7x-1) when factored Making use of the quadratic equation formula will help
165