Answer:
Explanation:
2x²-3=47
2x²=47+3
x²=50/2=25
x=±√25=±5
x = ±5
2x^2 - 3 = 47
Add 3 to each side
2x^2 - 3+3 = 47+3
2x^2 = 50
Divide each side by 2
2x^2 = 50/2
x^2 = 25
Take the square root of each side
sqrt(x^2) = sqrt(25)
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