Respuesta:
1)x²+3=4x²
x²-4x²=-3
-3x²=-3
x²=1
x=-1
x=1
2)7x²+5x-7=6x
7x²+5x-7-6x=0
7x²-x-7=0
- (-1)±√(-1)²-4×7×(-7)
x=-----------------------------------
2x7
1±√1+196
x=------------------
14
1±√197
x=--------------
1+√197
x₁=------------
1-√197
x₂=-----------
3)-x²-7=1
-x²=1+7
x²=-1-7
X€R
4)7x²-1=-4x. - - - - - >igual al segundo
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Respuesta:
1)x²+3=4x²
x²-4x²=-3
-3x²=-3
x²=1
x=-1
x=1
2)7x²+5x-7=6x
7x²+5x-7-6x=0
7x²-x-7=0
- (-1)±√(-1)²-4×7×(-7)
x=-----------------------------------
2x7
1±√1+196
x=------------------
14
1±√197
x=--------------
14
1+√197
x₁=------------
14
1-√197
x₂=-----------
14
3)-x²-7=1
-x²=1+7
x²=-1-7
X€R
4)7x²-1=-4x. - - - - - >igual al segundo