2. Which of the following equations is quadratic?

(1) x² + 2x + 11 = 0
(2) x² – 2x + 5 = x²
(3) (x + 2)² = 2x

Question

2. Which of the following equations is quadratic?  (1) x² + 2x + 11 = 0 (2) x² - 2x + 5 = x² (3) (x + 2)² = 2x²​

Gianna · Answer

Answer:   (1) x² + 2x + 11 = 0  (3) (x + 2)² = 2x²   Step-by-step explanation:   (1) x² + 2x + 11 = 0 , degree of the polynomial = 2, hence quadratic equation  (2) x² - 2x + 5 = x², degree of the polynomial = 1, hence linear equation  (3) (x + 2)² = 2x²​, degree of the polynomial = 2, hence quadratic equation

Jade

1. What properties did you use to sort the
quadrilaterals?
I

70) The simplification of
6 ÷ 6 + 6 x 6 – 6 gives
(1) 1
(2) 7
(3) 31
(4) 36

1 thought on “2. Which of the following equations is quadratic?<br /><br />(1) x² + 2x + 11 = 0<br />(2) x² – 2x + 5 = x²<br />(3) (x + 2)² = 2x”

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2. Which of the following equations is quadratic?(1) x² + 2x + 11 = 0(2) x² – 2x + 5 = x²(3) (x + 2)² = 2x