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What are the solutions of the equation x^2-30=x in x=-6,x=-5 x=-6,x=5 x=-5,x=6 x=5,x=6

Pergunta

What are the solutions of the equation
x^2-30=x
in
x=-6,x=-5
x=-6,x=5
x=-5,x=6
x=5,x=6

What are the solutions of the equation x^2-30=x in x=-6,x=-5 x=-6,x=5 x=-5,x=6 x=5,x=6

Solução

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KauaneProfissional · Tutor por 6 anos

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To solve the equation x^2 - 30 = x
, we can rearrange the equation to x^2 - x - 30 = 0
. This is a quadratic equation in the form of ax^2 + bx + c = 0
, where a = 1
, b = -1
, and c = -30
.

We can solve this quadratic equation by factoring. We need to find two numbers whose product is ac = -30
and whose sum is b = -1
. The two numbers that satisfy these conditions are -6
and 5
.

So, we can factor the quadratic equation as (x - 6)(x + 5) = 0
.

Setting each factor equal to zero gives us the solutions:
x - 6 = 0
or x + 5 = 0


Solving for x
, we get:
x = 6
or x = -5


Therefore, the solutions to the equation x^2 - 30 = x
are x = 6
and x = -5
.

So, the correct answer is x = -5, x = 6
.
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