An algebra problem by Marcelo Carpenter

Algebra Level 2

If X 2 = ( X + 1 ) 2 X^2 = (X+1)^2 , then what does X X equate to?

-.5 100000000000000 1 5

Marcelo Carpenter by Marcelo Carpenter , 18, USA

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2 solutions

x^2=(x+1)^2.
x^2=x^2+2x+1.
0=2x+1.
2x=-1.
x=-0.5.

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Nice Proof!

Marcelo Carpenter - 4 years, 1 month ago
Marcelo Carpenter
Apr 11, 2017

-.5²=(1-.5)²

.25=(.5)²

.25=.25

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