Pergunta

Function g is defined as g(x)=2x^2+5x-1 What are the solutions to g(x)=0 A x=(-5pm sqrt (33))/(4) (i) I x=(-5pm sqrt (17))/(4) C x=(5pm sqrt (33))/(4) D x=(5pm sqrt (17))/(4)
Solução

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Olivia MariaProfissional · Tutor por 6 anos
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To find the solutions to the equation g(x)=0
We can use the quadratic formula to solve this equation. The quadratic formula is given by:
x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}
In this case, a = 2
x = \frac{-5 \pm \sqrt{5^2 - 4(2)(-1)}}{2(2)}
Simplifying further, we have:
x = \frac{-5 \pm \sqrt{25 + 8}}{4}
x = \frac{-5 \pm \sqrt{33}}{4}
Therefore, the solutions to the equation g(x)=0
x = \frac{-5 \pm \sqrt{33}}{4}
So, the correct answer is option A.
, we need to solve the quadratic equation 2x^2 + 5x - 1 = 0
.
We can use the quadratic formula to solve this equation. The quadratic formula is given by:
x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}
In this case, a = 2
, b = 5
, and c = -1
. Plugging these values into the quadratic formula, we get:
x = \frac{-5 \pm \sqrt{5^2 - 4(2)(-1)}}{2(2)}
Simplifying further, we have:
x = \frac{-5 \pm \sqrt{25 + 8}}{4}
x = \frac{-5 \pm \sqrt{33}}{4}
Therefore, the solutions to the equation g(x)=0
are:
x = \frac{-5 \pm \sqrt{33}}{4}
So, the correct answer is option A.
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