x2 + 11x + 30 = 0 (x + 5)(x + 6) = 0 so the roots are -5 and -6
The factors of (x2 + 11x + 30) are (X + 5) and (x + 6)You want to look for two numbers, when multiplied equal 30, and when added equal 11. Start with factors of 30, and see what they add to: 5+6=11, and 5*6=30.
It is: x^2 +11x +24 = (x+8)(x+3) when factored
Yes
-x2 - 11x + 26 = -(x2 + 11x - 26) = -(x2 - 2x + 13x - 26) = -[ x(x - 2) + 13(x - 2) ] = -(x + 13)(x - 2) = (x + 13)(2 - x)
-(x + 5)(x + 6)
It is (x+2)(x+9) when factored
x2 -11x-12= (x-12)(x+1)
x2 + 11x + 30 = 0 (x + 5)(x + 6) = 0 so the roots are -5 and -6
The factors of (x2 + 11x + 30) are (X + 5) and (x + 6)You want to look for two numbers, when multiplied equal 30, and when added equal 11. Start with factors of 30, and see what they add to: 5+6=11, and 5*6=30.
(x + 9)(x + 2)
3x2 + 33x + 54 =3(x2 + 11x + 18) = 3(x + 9)(x + 2)
x=11+69/2 and x=11-69/2
x^3 - 121x
X2 -11x +10=(x - 1 )(x - 10)
x^2 + 11x + 6 has no rational zeros.
x2+11x+11 = 7x+9 x2+11x-7x+11-9 = 0 x2+4x+2 = 0 The above quadratic equation can be solved by using the quadratic equation formula and it will have two solutions.