Given below are two statements: Statement (I): (x 2 + 3x + 1) = (x - 2) 2 is not a quadratic equation. Statement (II): The nature of roots of quadratic equations x 2 + 2x√3 + 3 = 0 are real and equal. In light of the above statements, choose the most appropriate answer from the options given below.
Solution
✅ Correct Option: 1
Statement (I): $(x^2 + 3x + 1) = (x - 2)^2$ is not a quadratic equation 1) Let's expand $(x - 2)^2$: = $x^2 - 4x + 4$ 2) So the equation becomes: $x^2 + 3x + 1 = x^2 - 4x + 4$ 3) Rearranging: $x^2 + 3x + 1 - (x^2 - 4x + 4) = 0$ $7x - 3 = 0$ $x = \frac{3}{7}$ 4) This is a linear equation, not quadratic Therefore Statement (I) is TRUE Statement (II): The roots of $x^2 + 2x\sqrt{3} + 3 = 0$ are real and equal 1) For quadratic equation $ax^2 + bx + c = 0$ Here, $a=1$, $b=2\sqrt{3}$, $c=3$ 2) For real and equal roots: Discriminant = $b^2 - 4ac = 0$ 3) Let's calculate: = $(2\sqrt{3})^2 - 4(1)(3)$ = $12 - 12$ = $0$ 4) Since discriminant = 0, roots are real and equal Therefore Statement (II) is TRUE Hence both statements are true.
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JIPMAT 2024