Ответ:
1. 4х^2-3-2=0
4х^2-5=0
4х^2=5
х^2=5/4
х=√5/2 та х= - √5/2
2. 2х^2+10х-5=0. (:2)
х^2+5х-5/2=0
х^2+5х=5/2
х^2+5х+25/4=35/4
(х+5/2)^2=35/4
х+5/2=√35/4. та. х+5/2= - √35/2
х=√35/2-5/2. та. х= - √35/2 - 5/2
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Verified answer
Ответ:
1. 4х^2-3-2=0
4х^2-5=0
4х^2=5
х^2=5/4
х=√5/2 та х= - √5/2
2. 2х^2+10х-5=0. (:2)
х^2+5х-5/2=0
х^2+5х=5/2
х^2+5х+25/4=35/4
(х+5/2)^2=35/4
х+5/2=√35/4. та. х+5/2= - √35/2
х=√35/2-5/2. та. х= - √35/2 - 5/2