1) factor the expression into an equivalent form c^2-64 a) (c-4)(c-16) b) (c-8)(c+8) c) (c-4)(c+4) d) (c+16)(c-4) 2) factor the expression into an equivalent form 12y^2-75 a) 12(y-25)(y-3) b) 12(y-25)(y+3) c) 3(2y-5)(2y+5) d) 4(y-25)(y+3) 3) factor the expression 9y^2-36 a) 9(y-3)(y+3) b) 9(y+2)(y+2) c) 9(y-3)(y-3) d) 9(y-2)(y+2) 4)factor the expression -x^2+5x-4 a) -(x-5)(x+1) b) -(x+5)(x-1) c) -(x-1)(x-4) d) =(x-1)(x+4) 5) factor the expression into an equivalent form ab^2-b a) ab+b b) a(ab-b) c) b(ab-b) c) b(ab-1)