Question

Resolver: (x - 5)2 = x(x - 8) + 11

Answer 1

Respuesta:

x=7

Explicación paso a paso:

binomio al cuadrado:

(a-b)=a²-2ab+b²

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(x-5)²=x(x-8)+11

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(x-5)²=x²-2(5)(x)+(-5)²

=x²-10x+25

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x²-10x+25=x²-8x+11

x² se eliminan.

-10x+25=-8x+11

-10x+8x=11-25

-2x=-14

2x=14

x=14/2

x=7