Question

me ajudem por favor equação de 2 grau

Answer 1

7a x igual a 5 e c x igual a 2

Answer 2

a)x²=9
x=$\sqrt[2]{9}$=3

b)x²=36
x=$\sqrt{36}$=6

c)x²=0,36
x=$\sqrt{0,36}$=0,6

d)x²$\frac{25}{4}$
x=$\sqrt{25/4}$=$\frac{5}{2}$

7)a) x²-25=0
x=$\sqrt{25}$
x=5

 b) 2x²-98=0
x²=98/2
x²=49
x=$\sqrt{x}$
x=7

c) 24=6x²
x²=24/6
x²=4
x=$\sqrt{4}$
x=2

d) 64x²-1=0
x²=1/64
x=$\sqrt{1/64}$
x=1/8

e) 7x²-14=0
x²=14/7
x=$\sqrt{2}$

f)-x²+49=0
x=$\sqrt{49}$
x-7

g) -25+100x²=0
x²=25/100
x=$\sqrt{25/100}$
x=5/10

h) X²-81/4=0
x=$\sqrt{81/4}$
x=9/2