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zvonat [6]
2 years ago
5

Escreva uma equação do 2 grau que tenha: a) - 5 e 3 como raízes. b) x, +x, = 17 x, x = 70, sabendo que x, e x, são as raízes. =

= C) 0 e 6 como raizes. d) Duas raízes reais iguais. e) Nenhuma raiz real.
Mathematics
1 answer:
umka21 [38]2 years ago
7 0
Can u translate in English for me
You might be interested in
Show 2 different solutions to the task.
laila [671]

Answer with Step-by-step explanation:

1. We are given that an expression n^2+n

We have to prove that this expression is always is even for every integer.

There are two cases

1.n is odd integer

2.n is even integer

1.n is an odd positive integer

n square is also odd integer and n is odd .The sum of two odd integers is always even.

When is negative odd integer then n square is positive odd integer and n is negative odd integer.We know that difference of two odd integers is always even integer.Therefore, given expression is always even .

2.When n is even positive integer

Then n square is always positive even integer and n is positive integer .The sum of two even integers is always even.Hence, given expression is always even when n is even positive integer.

When n is negative even integer

n square is always positive even integer and n is even negative integer .The difference of two even integers is always even integer.

Hence, the given expression is always even for every integer.

2.By mathematical induction

Suppose n=1 then n= substituting in the given expression

1+1=2 =Even integer

Hence, it is true for n=1

Suppose it is true for n=k

then k^2+k is even integer

We shall prove that it is true for n=k+1

(k+1)^1+k+1

=k^1+2k+1+k+1

=k^2+k+2k+2

=Even +2(k+1)[/tex] because k^2+k is even

=Sum is even because sum even numbers is also even

Hence, the given expression is always even for every integer n.

3 0
3 years ago
What is the solution to 2/3a - 1/6 = 1/3
konstantin123 [22]
The solution would be: a = 3/4
4 0
2 years ago
Read 2 more answers
A triangle with an angle measuring 104° must be which of these?
Tema [17]
This will be an obtuse angled triangle because one angle is greater than 90 degrees.
8 0
3 years ago
Help ima mark BRAINLIST
maw [93]

Answer:

40%

Step-by-step explanation:

There are 5 seniors (2+3)

2 of them are males

P ( male given a senior)= male/ senior

                                       2/5

                                     .40

                                      40%

3 0
3 years ago
Suppose marginal benefit of your first cup of coffee is $4 of your second is $3, and your third is $2 . If the price of coffee i
enot [183]
I would buy 69 cups of coffee
7 0
2 years ago
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