solve each of the following quadratic equation by extracting square root 1, x²-100=0 2, x²=121 3,2x²=50 4, x²=1/16 5,(x-2)²-4=0
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Given : x²-100=0
x²=121
2x²=50
x²=1/16
(x-2)²-4=0
To Find : solve
Solution:
x²-100=0
=> x² = 100
=> x = √100
=> x = ± 10
x² = 121
=>x = √121
=> x = ±11
2x² = 50
=> x² = 25
=> x= ±5
x² = 1/16
=> x = ±1/4
(x - 2)² - 4 = 0
=> (x - 2)² = 4
=> x - 2 = ±2
=> x = 2 ± 2
=> x = 0 , 4
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