A quadratic equation is an equation whose leading coefficient is of the second degree. The factored form of the quadratic equation x²-x-2 is (x+1)(x-2).
<h3>What is a quadratic equation?</h3>
A quadratic equation is an equation whose leading coefficient is of second degree also the equation has only one unknown while it has 3 unknown numbers.
It is written in the form of ax²+bx+c.
The factored form of the quadratic equation can be done in the following manner,

Thus, the factored form of the quadratic equation x²-x-2 is (x+1)(x-2).
Learn more about Quadratic Equations:
brainly.com/question/2263981
Answer:
14 headphones
Step-by-step explanation:
Use algebraic manipulation. Let x be the number of headphones sold this week:
89 = x + (3x + 5)
Combine like terms:
89 = 4x + 5
Get the x's on one side:
84 = 6x
Divide:
14 = x
So, Veronica sold 14 headphones this week.
48.5 inches is the answer
Answer:
we know,
area of circle = πr²
area of semicircle of circle having diameter of 16.
according to formula = πr²
radius = 16/2 = 8 cm
22/7 × (8)² → 22/7 × 64 → 1408/7 = 201.14/2 = 100.57 cm (approx.)
area of semicircle of circle having diameter of 20 cm.
22/7 × 20² = 22/7 × 400 = 8800/7 = 1257.14/2 = 628.57
to get the area of shaded part 628.57 - 100.57 = 528 cm² (approx.)
hope this helps you!