Solve the following exercise without dividing:
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Solve the following exercise without dividing:
Let's solve the given equation:
First, let's arrange the equation by moving and combining like terms:
Now, instead of dividing both sides of the equation by the common factor of all terms in the equation (which is 4), we'll choose to factor it out of the parentheses:
From here remember that the product of expressions will yield 0 only if at least one of the multiplying expressions equals zero,
However, the first factor in the expression that we obtained is 4, which is obviously different from zero, Therefore:
Now we notice that in the resulting equation the coefficient of the quadratic term is not 1. Hence we'll solve the equation using the quadratic formula (let's recall it):
The rule states that for a quadratic equation in the general form:
There are two solutions (or fewer) which we can find using the formula:
,
Let's continue and use the quadratic formula, noting that:
Therefore the solutions to the quadratic equation are:
Let's continue and reduce the fractions in the solutions:
and
Let's summarize the solution of the equation:
Therefore, the correct answer is answer D.
\( x^2+6x+9=0 \)
What is the value of X?
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