x^2-16x=64
2006-10-29 10:51:29 · 6 answers · asked by koalabear 2 in Education & Reference ➔ Homework Help
please show work!!!!!!!!!!!!
2006-10-29 10:54:12 · update #1
x^2-16x-64=0
solve it by factor or the quad formula
x=8+8*radical(2), 8-8*radical(2)
2006-10-29 10:55:10 · answer #1 · answered by alan21627 4 · 1⤊ 2⤋
8
2006-10-29 18:52:33 · answer #2 · answered by ♥ NïJâ♥ 3 · 1⤊ 2⤋
x^2 - 16x - 64 = 0
(x-8)(x-8) = 0
So, x = 8
~ ⥠~
2006-10-29 18:58:09 · answer #3 · answered by I ♥ AUG 6 · 1⤊ 0⤋
its a quadratic equation so subtract 64 from both sides first so the equation equals 0. then factor it out. get both those factors to equal 0 and solve from there. you should get 2 answers.
2006-10-29 18:54:18 · answer #4 · answered by Angel 4 · 1⤊ 0⤋
I "heart" AUG is right except you either need to put +/-8 or |8| which mean the same thing, just that the answer is either + OR/AND - 8
2006-10-29 19:02:38 · answer #5 · answered by Br@d 2 · 0⤊ 0⤋
do not listen to i love aug
it is thoroughly unfactorable
use quadratic formula
x = -b plus/minus squareroot( b2-4ac) / 2a
b being -16, a being 1, c being -64
2006-10-29 19:01:18 · answer #6 · answered by jinternazionale 2 · 0⤊ 1⤋