Is (x-2)(x+5)-2=0 a Quadratic Equation?
Let's analyze the given equation: (x-2)(x+5)-2=0 to determine if it's a quadratic equation.
Understanding Quadratic Equations
A quadratic equation is an equation of the form ax² + bx + c = 0, where a, b, and c are constants, and a ≠ 0. The highest power of the variable 'x' in a quadratic equation is 2.
Analyzing the Given Equation
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Expand the equation: (x-2)(x+5)-2 = 0 x² + 3x - 10 - 2 = 0 x² + 3x - 12 = 0
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Identify the coefficients: a = 1, b = 3, c = -12
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Observe the highest power of 'x': The highest power of 'x' is 2.
Conclusion:
Since the equation can be rewritten in the standard quadratic form ax² + bx + c = 0, and the highest power of 'x' is 2, we can conclude that (x-2)(x+5)-2=0 is indeed a quadratic equation.