extract the sqaure root of x²-100=0
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Answer:
x=10
Step-by-step explanation:
x^{2} - 100 = 0
+100 +100
\sqrt x ^{2} = \sqrt 100
x=10
Answer:
±10 (positive, negative 10)
Step-by-step explanation:
x²-100=0
x² = 100 (transpose -100)
√x² = √100 (square both sides)
x = ±10
the square root of x² is x. because, x•x = x²
the square root of 100 is ±10. because 10•10= 100 also, -10 × -10= 100.