Carl is right because simplifying it gets us:
Part A)The given equation is:
The radicand or discriminant(d) of the equation will be:
Since the discriminant is equal to 0, the given quadratic equation has only 1 root. In other words we can say the the given equation is a perfect square.
Part B)The given equation is:
We can solve this expression by factorization. Factors of middle term are to be made in such a way that their product equals the product of first and third term and sum is equal to the middle term i.e. product should be 4x² and sum should be -4x.
So the two such terms are -2x and -2x. Using the factors and simplifying the equation by taking common we get:
Answer:
Circumference:
Area:
Step-by-step explanation:
Circumference formula: C = 2πr, where;
C = Circumference
π = (pi) 3.1416
r = radius
Replace the variables in the formula:
C =
Area formula: A = π, where;
A = Area
π = (pi) 3.1416
r = radius
Replace the variables in the formula.
Answer:
x=2.27 units
Step-by-step explanation:
remember Sin is hypotenuse ÷opposite