Question

determinhe as raizez da funçao f(x)=2x²-10​

Answer 1

f(x)=2x²-10​

y=2x²-10​ // se y=0, temos

0=2x²-10

2x²=10

x²​​=10/2

x²=5

x1=$\sqrt{5}$ ; x2=-$\sqrt{5}$