Question

Eric

求詳解

La>
(17x-23)²+ 2(17x)-23) =0
3.解一元二次方程式(17x-23)2+34x=46。
解:
(17X-23)²+34X-46-
(11x-23)
(17X-23)
(11x-3)²+
X
(11 X -> 3)² + 34X-46=0
(17 X-23)+2 (17X-23) =0
1 2
4623

Answer 1

綾

(17x - 23)^2 + 34x - 46 = 0
(17x - 23)^2 + 2(17x - 23) = 0
(17x - 23)[(17x - 23) + 2] = 0
(17x - 23)(17x - 21) = 0
x = 23/17 or 21/17