2X的平方-X=58怎么解
问题描述:
2X的平方-X=58怎么解
答
2X² - X = 58
X² - X/2 = 29
X² - X/2 + 1/16 =463/16
(X - 1/4)² =463/16
X - 1/4 = ± √463 / 4
X = 1/4 ± √463 / 4