Question

Responda pfffffffffff
Responda as equaçoes do 2 grau

A- x²-5=20

B- 2x²=2

C- 4x²+2=34

Answer 1

A) x²-5=20
X²=20+5
X²=25
X=±√25
X=5


B) 2x²=2
X²=2/2
X²=1
X=±√1
X=1


C) 4x²+2=34
4x²=34-2
4x²=32
X²=32/4
X²=8
X=±√8


Espero ter ajudado :-)

Answer 2

a) x²-5 = 20
x² = 20+5
x² = 25
x =  √25
x = 5

b) 2x² = 2
x = 2/2 = 1

c) 4x²+2 = 34
4x² = 34-2
4x² = 32
x² = 32/4
x² = √8