2x^2-1400=0 — step-by-step solution

Let's solve in

ℝ

2 x^{2} - 1400 = 0

ⓘ Both sides are divided by

2

x^{2} = 700

The two numbers whose square is

700

are

- 10 \cdot \sqrt{7}

and

10 \cdot \sqrt{7}

▶Solutions obtained:

x = {- 10 \cdot \sqrt{7}, 10 \cdot \sqrt{7}}

The numeric value of:

x = {- 10 \cdot \sqrt{7}, 10 \cdot \sqrt{7}}

is:

x = {\approx - 10 \cdot 2.6458, \approx 10 \cdot 2.6458}

▷

x = {\approx -26.4575, \approx 26.4575}