1)x^2-9x+8=0

Answer: x 1=8 x2= 1.

(2)x^2+6x-27=0

Answer: x 1=3 x2=-9.

(3)x^2-2x-80=0

Answer: x 1=-8 x2= 10.

(4)x^2+ 10x-200=0

Answer: x 1=-20 x2= 10.

(5)x^2-20x+96=0

Answer: x 1= 12 x2=8.

(6)x^2+23x+76=0

Answer: x 1=- 19 x2=-4.

(7)x^2-25x+ 154=0

Answer: x1=14x2 =11.

(8)x^2- 12x- 108=0

Answer: x 1=-6 x2= 18.

(9)x^2+4x-252=0

Answer: x1=14x2 =-18.

( 10)x^2- 1 1x- 102=0

Answer: x 1= 17 x2=-6.

( 1 1)x^2+ 15x-54=0

Answer: x 1=- 18 x2=3.

( 12)x^2+ 1 1x+ 18=0

Answer: x 1=-2 x2=-9.

( 13)x^2-9x+20=0

Answer: x 1=4 x2=5.

( 14)x^2+ 19x+90=0

Answer: x 1=- 10 x2=-9.

These questions are good. Are they enough? Is it okay?