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3 years ago

How do you do this problem? Solve by factoring or finding square roots. x^2-1=0

Mathematics

2 answers:

sp2606 [1]3 years ago

4 0

X² - 1 = 0
 + 1 + 1
 x² = 1
 x = +1

Serga [27]3 years ago

3 0

use formula^: a²-b²= (a-b)(a+b)
x²-1=0
x²-1²=0
(x-1)(x+1)=0
x-1=0⇒ x₁=-1
x+1=0 ⇒x₂=1
Answer: x=+-1

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