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3 years ago

Which method is the most effective method to use to solve x^2+4x+3=0

Mathematics

2 answers:

lukranit [14]3 years ago

6 0

Answer:

Completing the square.

Step-by-step explanation:

since there is no "a" term and the bx term is even, completing the square is your best bet.

miss Akunina [59]3 years ago

4 0

For this case we have as a simpler method the factorization. We must find two numbers that multiplied as a result +3 and added as a result +4.

These numbers are:

3 and 1. $3 + 1 = 4\\\\3 * 1 = 3$

So, we have to:

$x ^2 + 4x + 3 =\\(x + 3) (x+1)$

Answer:

$(x + 3) (x + 1)$

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WORTH 100 POINTS need the answers asap

Lena [83]

Answer:

$f(x) = x^2 , x < 2$

$f(x) = 5, 2\leq x < 4$

Step-by-step explanation:

We have a parabola and a small line shown in the graph.

The parabola goes upto x = 2 but does not reach that very value. So x = 2 starts on the line above where x = 2 and ends just before x = 4.

Therefore, this function can be modeled by:

$f(x) = x^2 , x < 2$

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3 years ago

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NemiM [27]

Answer:

l think that the answer is understand the problem better.

Step-by-step explanation:

Coz I think when you understand your problem better it helps you to solve it better.

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2 years ago

16 divided into 346 what is the answer

meriva

I think it is 23 I think I hope I helped

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2 years ago

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You take a bite of a cookie and begin to crush it between your teeth making smaller bits in your mouth.

timofeeve [1]

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5 0

3 years ago

Ten less than five times a number is less than six times the number decreased by eight

Luden [163]

10 - 5x < 6x - 8

We can treat this inequality like a normal algebraic equation.

Add 5x to both sides

10 < 11x - 8

Add 8 to both sides

18 < 11x

Divide both sides by 11

1.64 < x

X is greater than the value 1.64.

Let's plug the number 2 into each value of x to verify.

10 - 5x < 6x - 8

10 - 5*2) < (6 * 2) - 8

10 - 10 < 12 - 8

0 < 4

It's correct.

Now let's plug 1, which is less than 1.64.

10 - 5x < 6x - 8

10 - 5 < 6 - 8

5 < -2

This is not correct, which means that our answer was correct.

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3 years ago