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What is the discriminant of the quadratic equation
7x^(2)-9x-2=0 ?
25
137

-137

-25

What is the discriminant of the quadratic equation $7 x^{2}-9 x-2=0$ ? $\newline$ $25$ $\newline$ $137$ $\newline$ $-137$ $\newline$ $-25$

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Transformations of functions

Full solution

Q. What is the discriminant of the quadratic equation

7 x^{2}-9 x-2=0

?

\newline

25

\newline

137

\newline

-137

\newline

-25

Identify Coefficients: The discriminant of a quadratic equation $ax^2 + bx + c = 0$ is given by the formula $D = b^2 - 4ac$ . We need to identify the coefficients $a$ , $b$ , and $c$ from the given quadratic equation and then apply the formula.
Given Quadratic Equation: The given quadratic equation is $7x^2 - 9x - 2 = 0$ . Here, the coefficient $a$ is $7$ , the coefficient $b$ is $-9$ , and the coefficient $c$ is $-2$ .
Calculate Discriminant: Now we will calculate the discriminant using the formula $D = b^2 - 4ac$ . Substituting the values of $a$ , $b$ , and $c$ , we get $D = (-9)^2 - 4(7)(-2)$ .
Final Result: Calculating the discriminant, we have $D = 81 - 4(7)(-2) = 81 - (-56) = 81 + 56 = 137$ .

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\newline

\newline

\text{}(A)g(x) = 9|x+2| - 4\text{]}

\newline

\text{}(B)g(x) = 9|x-2| - 4\text{]}

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\text{}(C)g(x)=-9|x-2| +4\text{]}

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\newline

\newline

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y=x^{2}

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