5x + 5y = 19x = 3.8 - yory = 3.8 - x
-49
-1-2x-4x=19-6x-1 = -19x = 3
3x2 - 19x - 14 = 0 3x2 - 21x + 2x - 14 = 0 3x(x - 7) + 2(x - 7) = 0 (x - 7)(3x + 2) = 0 x - 7 = 0 or 3x + 2 = 0 x = 7 or x = -2/3
-7
(x+7)(x+12)
(x + 12)(x + 7)
That's not a trinomial, but it factors to x(x + 19)
X3 - 20X2 + 19Xfactor out an XX(X2 - 20X + 19)what two factors of 19 add up to - 20?X(X - 1)(X - 19)============ fully factored
use the quadratic formula since there isn't a factor of 60 that when added together equals 19 The above answer is wrong because 4 and 15 are such numbers. x2 + 19x + 60 = x2 + 4x + 15x + 60 = x(x + 4) + 15(x + 4) = (x + 4)(x + 15)
x^2-19x+90 (x-9) (x-10)
(x - 10)(x - 9)
(3x + 1)(x + 6)
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
(x - 12)(x - 7)
x(x - 19)(x - 1)
19x