Question

1) resolva as equações a) 2x²-98=0 b) 64x²-1=0 c) 7x2-14=0 d) -x²+49=0 e) -25+100x²=0 f) x2-81÷4=0 Quero o Calculo

Answer 1

a)2x²-98
2x²= 98
x²=49
x=√49
x= 7

b)64x²-1
64x²= 1
x=√1/64
x= 0,125

c)7x²-14
7x²= 14
x²= 14/7
x²= 2
x= √2

d)-x²+49
x²= 49
x= √49
x= 7

e)100x²-25
100x²= 25
x²= 25/100
x²= 1/4
x= √1/4
x= 1/2

f)2x-81/4
2x-20,25
2x= 20,25
x= 20,25/2
x= 10,125