Question

X2 + 2 – 42 = 0.
Solve quadratic equation

Answer 1

`2√(10)`, -
`2√(10)`

Explanation:

(x^2) + 2 - 42 = 0

(x^2) - 40 = o

x =±
`√(40\\)`

x =±
`2√(10)`

Therefore x =
`2√(10)`, -
`2√(10)`,

Answer 2

-2√10, 2√10

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.