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What are the solutions to this equation?
[tex]\[ 2x^2 = -10x + 12 \][/tex]

A. [tex]\( x = 6 \)[/tex]
B. [tex]\( x = -2 \)[/tex]
C. [tex]\( x = 3 \)[/tex]
D. [tex]\( x = 1 \)[/tex]
E. [tex]\( x = -6 \)[/tex]
F. [tex]\( x = -3 \)[/tex]


Sagot :

To solve the equation [tex]\(2x^2 = -10x + 12\)[/tex], we will first rearrange it to standard quadratic form, which is [tex]\(ax^2 + bx + c = 0\)[/tex].

Given equation:
[tex]\[ 2x^2 = -10x + 12 \][/tex]

Rearrange to:
[tex]\[ 2x^2 + 10x - 12 = 0 \][/tex]

This is a quadratic equation in the form [tex]\(ax^2 + bx + c = 0\)[/tex], where [tex]\(a = 2\)[/tex], [tex]\(b = 10\)[/tex], and [tex]\(c = -12\)[/tex].

The solutions to this equation can be found using the quadratic formula:
[tex]\[ x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \][/tex]

Substitute [tex]\(a = 2\)[/tex], [tex]\(b = 10\)[/tex], and [tex]\(c = -12\)[/tex] into the formula:
[tex]\[ x = \frac{-10 \pm \sqrt{10^2 - 4 \cdot 2 \cdot (-12)}}{2 \cdot 2} \][/tex]
[tex]\[ x = \frac{-10 \pm \sqrt{100 + 96}}{4} \][/tex]
[tex]\[ x = \frac{-10 \pm \sqrt{196}}{4} \][/tex]
[tex]\[ x = \frac{-10 \pm 14}{4} \][/tex]

Now, solve for the two possible values of [tex]\(x\)[/tex]:

1. When [tex]\( x = \frac{-10 + 14}{4} \)[/tex]:
[tex]\[ x = \frac{4}{4} \][/tex]
[tex]\[ x = 1 \][/tex]

2. When [tex]\( x = \frac{-10 - 14}{4} \)[/tex]:
[tex]\[ x = \frac{-24}{4} \][/tex]
[tex]\[ x = -6 \][/tex]

Thus, the solutions to the equation [tex]\(2x^2 = -10x + 12\)[/tex] are:
[tex]\[ x = 1 \quad \text{and} \quad x = -6 \][/tex]

From the given options, the correct answers are:

- [tex]\( x = 1 \)[/tex]
- [tex]\( x = -6 \)[/tex]