Question

2x²-32=0 2x²-2450=0 x²-15=0

Answer 1

a)
2x² - 32 = 0
2x² = 32
x² = 32/2
x² = 16
x = √16
x = + 4 e x = - 4

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b)
2x² - 2450 = 0
2x² = 2450
x² = 2450/2
x² = 1225
x = √1225
x = + 35 e x = - 35

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c)
x² - 15 = 0
x² = 15
x = √15
x = + √15 e x = - √15