Question

X2 + 2 – 42 = 0. Solve quadratic equation

Answer 1

Answer:

$2\sqrt{10}$, -$2\sqrt{10}$

Step-by-step explanation:

(x^2) + 2 - 42 = 0

(x^2) - 40 = o

x =± $\sqrt{40\\}$

x =± $2\sqrt{10}$

Therefore x = $2\sqrt{10}$, -$2\sqrt{10}$,

Answer 2

Answer:

-2√10, 2√10

Step-by-step explanation:

Graphing x²-40 would be the fastest way to go. However, because this is not factorable, you have to use the quadratic formula to solve it if you want to do it algebraically.