If `x-3` is a factor of `x^2-a x-15` , then `a=` `-2` (b) 5 (c) `-5` (d) 3

If x-3 is a factor of x^2-a x-15 , then a= (a) -2 (b) 5 (c) -5 (d) 3

If x-3 is a factor of x^(2)-ax-15, then a=-2(b)5(c)-5(d)3

If x-2 is a factor of x^2+3a x-2a, then a= (a) 2 (b) -2 (c) 1 (d) -1

If x+2 is a factor of x^2+a x+2b and a+b=4 , then (a) a=1, b=3 (b) a=3, b=1 (c) a=-1, b=5 (d) a=5, b=-1

If x-a is a factor of x^3-3x^2a+2a^2x+b , then the value of b is (a) 0 (b) 2 (c) 1 (d) 3

If x+2 is a factor of x^2+a x+2b and a+b=4 , then (a) a=1,\ b=3 (b) a=3,\ b=1 (c) a=-1,\ b=5 (d) a=5,\ b=-1

If x-a is a factor of x^(3)-3x^(2)a+2a^(2)x+b then the value of b is 0(b)2(c)1(d)3

If 2x+3y=5 and 3x+2y=10 then x-y= (a) 3 (b) 4 (c) 5 (d) 6

One factor of x^4+x^2-20 is x^2+5. The other factor is x^2-4\ (b) x-4 (c) x^2-5 (d) x+2