((x2−0.52)−0.5)2−0.5=0。如何求解?
已知:(x2−0.52)−0.52−0.5=0。
求解:(x2−0.52)−0.52−0.5=0。
解答
(x2−0.52)−0.52−0.5=0
⇒(x−0.52)−0.52−0.5=0
⇒(x−0.5−12)2−0.5=0
⇒x−1.54−0.5=0
⇒x−1.5−24=0
⇒x−3.5=0
⇒x=3.5
广告
已知:(x2−0.52)−0.52−0.5=0。
求解:(x2−0.52)−0.52−0.5=0。
解答
(x2−0.52)−0.52−0.5=0
⇒(x−0.52)−0.52−0.5=0
⇒(x−0.5−12)2−0.5=0
⇒x−1.54−0.5=0
⇒x−1.5−24=0
⇒x−3.5=0
⇒x=3.5