PLEASEEEEE HELLLLLLP!!!!!!!!!!!
 1)factor the expression. 
 x^2+7x+10
 a) (x+3)(x+4)
 b) (x+2)(x+5)
 c) (x-2)(x-5)
 d) (x+1)(x+7)
 2)factor the expression
 x^2-3x+2
 a) (x+2)(x-1)
 b) (x+2)(x+1)
 c) (x-2)(x-1)
 d) (x-1)(x-3)
 3)factor the expression
 -x^2+3x+40
 a) -(x+2)(x-20)
 b) -(x-5)(x+8)
 c) (x-4)(x-10)
 d) -(x+5)(x-8)
 4) find the GCF of the expression
 3a^2+9
 a)3
 b)a
 c)a+3
 d)3a
 5)find the GCF of the expression
 25b^2-20b
 a)25
 b)5-b
 c)b
 d)5b