Factor the polynomial completely. If the polynomial cannot be factored, write prime.
9z2 - 6z - 8
(3z + 2)(3z - 4)
(9z + 2)(z - 4)
(3z - 2)(3z + 4)
prime
2007-07-12 20:16:22 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
give all max and min answers. ie for the 1st eg u gave [(3z+2)(3z-4)] it is negative2/3 for the min and positive4/3 for the max. got it? hopefully dat helps
2007-07-12 20:27:42 · answer #1 · answered by scarlettcrew87 2 · 0⤊ 0⤋
9z2 - 6z - 8
product = -8 * 9 = -72
sum = -6
factor = 6 * -12
:.9z2 - 6z - 8 = 9z2 -12z + 6z - 8
= 3z( 3z - 4) +2( 3z - 4)
= (3z + 2)(3z - 4)
2007-07-13 03:31:44 · answer #2 · answered by Tubby 5 · 0⤊ 0⤋
(3z + 2) (3z - 4) is the answer.
Check
9z² - 12z + 6z - 8 = 9z² - 6z - 8 as required
2007-07-13 04:03:26 · answer #3 · answered by Como 7 · 0⤊ 0⤋