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Alina [70]
3 years ago
12

X2 + 2 – 42 = 0. Solve quadratic equation

Mathematics
2 answers:
kari74 [83]3 years ago
6 0

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},

grigory [225]3 years ago
4 0

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.

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